644394520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:474

約数の個数: 256

約数和(自身を含む): 1980702720

約数和(自身を除く): 1336308200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 17, 20, 22, 28, 31, 34, 35, 40, 44, 55, 56, 62, 68, 70, 77, 85, 88, 110, 119, 124, 136, 140, 154, 155, 170, 187, 217, 220, 238, 248, 280, 308, 310, 340, 341, 374, 385, 397, 434, 440, 476, 527, 595, 616, 620, 680, 682, 748, 770, 794, 868, 935, 952, 1054, 1085, 1190, 1240, 1309, 1364, 1496, 1540, 1588, 1705, 1736, 1870, 1985, 2108, 2170, 2380, 2387, 2618, 2635, 2728, 2779, 3080, 3176, 3410, 3689, 3740, 3970, 4216, 4340, 4367, 4760, 4774, 5236, 5270, 5558, 5797, 6545, 6749, 6820, 7378, 7480, 7940, 8680, 8734, 9548, 10472, 10540, 11116, 11594, 11935, 12307, 13090, 13498, 13640, 13895, 14756, 15880, 17468, 18445, 19096, 21080, 21835, 22232, 23188, 23870, 24614, 26180, 26996, 27790, 28985, 29512, 30569, 33745, 34936, 36890, 40579, 43670, 46376, 47243, 47740, 49228, 52360, 53992, 55580, 57970, 61138, 61535, 67490, 73780, 74239, 81158, 86149, 87340, 94486, 95480, 98456, 111160, 115940, 122276, 123070, 134980, 135377, 147560, 148478, 152845, 162316, 172298, 174680, 188972, 202895, 209219, 231880, 236215, 244552, 246140, 269960, 270754, 296956, 305690, 324632, 344596, 371195, 377944, 405790, 418438, 430745, 472430, 492280, 519673, 541508, 593912, 611380, 676885, 689192, 742390, 811580, 836876, 861490, 944860, 947639, 1039346, 1046095, 1083016, 1222760, 1353770, 1464533, 1484780, 1623160, 1673752, 1722980, 1889720, 1895278, 2078692, 2092190, 2301409, 2598365, 2707540, 2929066, 2969560, 3445960, 3790556, 4157384, 4184380, 4602818, 4738195, 5196730, 5415080, 5858132, 7322665, 7581112, 8368760, 9205636, 9476390, 10393460, 11507045, 11716264, 14645330, 16109863, 18411272, 18952780, 20786920, 23014090, 29290660, 32219726, 37905560, 46028180, 58581320, 64439452, 80549315, 92056360, 128878904, 161098630, 322197260, 644394520]

約数ペア:

[(1, 644394520), (2, 322197260), (4, 161098630), (5, 128878904), (7, 92056360), (8, 80549315), (10, 64439452), (11, 58581320), (14, 46028180), (17, 37905560), (20, 32219726), (22, 29290660), (28, 23014090), (31, 20786920), (34, 18952780), (35, 18411272), (40, 16109863), (44, 14645330), (55, 11716264), (56, 11507045), (62, 10393460), (68, 9476390), (70, 9205636), (77, 8368760), (85, 7581112), (88, 7322665), (110, 5858132), (119, 5415080), (124, 5196730), (136, 4738195), (140, 4602818), (154, 4184380), (155, 4157384), (170, 3790556), (187, 3445960), (217, 2969560), (220, 2929066), (238, 2707540), (248, 2598365), (280, 2301409), (308, 2092190), (310, 2078692), (340, 1895278), (341, 1889720), (374, 1722980), (385, 1673752), (397, 1623160), (434, 1484780), (440, 1464533), (476, 1353770), (527, 1222760), (595, 1083016), (616, 1046095), (620, 1039346), (680, 947639), (682, 944860), (748, 861490), (770, 836876), (794, 811580), (868, 742390), (935, 689192), (952, 676885), (1054, 611380), (1085, 593912), (1190, 541508), (1240, 519673), (1309, 492280), (1364, 472430), (1496, 430745), (1540, 418438), (1588, 405790), (1705, 377944), (1736, 371195), (1870, 344596), (1985, 324632), (2108, 305690), (2170, 296956), (2380, 270754), (2387, 269960), (2618, 246140), (2635, 244552), (2728, 236215), (2779, 231880), (3080, 209219), (3176, 202895), (3410, 188972), (3689, 174680), (3740, 172298), (3970, 162316), (4216, 152845), (4340, 148478), (4367, 147560), (4760, 135377), (4774, 134980), (5236, 123070), (5270, 122276), (5558, 115940), (5797, 111160), (6545, 98456), (6749, 95480), (6820, 94486), (7378, 87340), (7480, 86149), (7940, 81158), (8680, 74239), (8734, 73780), (9548, 67490), (10472, 61535), (10540, 61138), (11116, 57970), (11594, 55580), (11935, 53992), (12307, 52360), (13090, 49228), (13498, 47740), (13640, 47243), (13895, 46376), (14756, 43670), (15880, 40579), (17468, 36890), (18445, 34936), (19096, 33745), (21080, 30569), (21835, 29512), (22232, 28985), (23188, 27790), (23870, 26996), (24614, 26180)]