21189480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1$

素因数の和:108

約数の個数: 192

約数和(自身を含む): 74269440

約数和(自身を除く): 53079960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 47, 51, 52, 60, 65, 68, 78, 85, 94, 102, 104, 120, 130, 136, 141, 156, 170, 188, 195, 204, 221, 235, 255, 260, 282, 289, 312, 340, 376, 390, 408, 442, 470, 510, 520, 564, 578, 611, 663, 680, 705, 780, 799, 867, 884, 940, 1020, 1105, 1128, 1156, 1222, 1326, 1410, 1445, 1560, 1598, 1734, 1768, 1833, 1880, 2040, 2210, 2312, 2397, 2444, 2652, 2820, 2890, 3055, 3196, 3315, 3468, 3666, 3757, 3995, 4335, 4420, 4794, 4888, 5304, 5640, 5780, 6110, 6392, 6630, 6936, 7332, 7514, 7990, 8670, 8840, 9165, 9588, 10387, 11271, 11560, 11985, 12220, 13260, 13583, 14664, 15028, 15980, 17340, 18330, 18785, 19176, 20774, 22542, 23970, 24440, 26520, 27166, 30056, 31161, 31960, 34680, 36660, 37570, 40749, 41548, 45084, 47940, 51935, 54332, 56355, 62322, 67915, 73320, 75140, 81498, 83096, 90168, 95880, 103870, 108664, 112710, 124644, 135830, 150280, 155805, 162996, 176579, 203745, 207740, 225420, 249288, 271660, 311610, 325992, 353158, 407490, 415480, 450840, 529737, 543320, 623220, 706316, 814980, 882895, 1059474, 1246440, 1412632, 1629960, 1765790, 2118948, 2648685, 3531580, 4237896, 5297370, 7063160, 10594740, 21189480]

約数ペア:

[(1, 21189480), (2, 10594740), (3, 7063160), (4, 5297370), (5, 4237896), (6, 3531580), (8, 2648685), (10, 2118948), (12, 1765790), (13, 1629960), (15, 1412632), (17, 1246440), (20, 1059474), (24, 882895), (26, 814980), (30, 706316), (34, 623220), (39, 543320), (40, 529737), (47, 450840), (51, 415480), (52, 407490), (60, 353158), (65, 325992), (68, 311610), (78, 271660), (85, 249288), (94, 225420), (102, 207740), (104, 203745), (120, 176579), (130, 162996), (136, 155805), (141, 150280), (156, 135830), (170, 124644), (188, 112710), (195, 108664), (204, 103870), (221, 95880), (235, 90168), (255, 83096), (260, 81498), (282, 75140), (289, 73320), (312, 67915), (340, 62322), (376, 56355), (390, 54332), (408, 51935), (442, 47940), (470, 45084), (510, 41548), (520, 40749), (564, 37570), (578, 36660), (611, 34680), (663, 31960), (680, 31161), (705, 30056), (780, 27166), (799, 26520), (867, 24440), (884, 23970), (940, 22542), (1020, 20774), (1105, 19176), (1128, 18785), (1156, 18330), (1222, 17340), (1326, 15980), (1410, 15028), (1445, 14664), (1560, 13583), (1598, 13260), (1734, 12220), (1768, 11985), (1833, 11560), (1880, 11271), (2040, 10387), (2210, 9588), (2312, 9165), (2397, 8840), (2444, 8670), (2652, 7990), (2820, 7514), (2890, 7332), (3055, 6936), (3196, 6630), (3315, 6392), (3468, 6110), (3666, 5780), (3757, 5640), (3995, 5304), (4335, 4888), (4420, 4794)]