81964620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:480

約数の個数: 144

約数和(自身を含む): 264246528

約数和(自身を除く): 182281908

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 37, 45, 60, 62, 74, 90, 93, 111, 124, 148, 155, 180, 185, 186, 222, 279, 310, 333, 370, 372, 397, 444, 465, 555, 558, 620, 666, 740, 794, 930, 1110, 1116, 1147, 1191, 1332, 1395, 1588, 1665, 1860, 1985, 2220, 2294, 2382, 2790, 3330, 3441, 3573, 3970, 4588, 4764, 5580, 5735, 5955, 6660, 6882, 7146, 7940, 10323, 11470, 11910, 12307, 13764, 14292, 14689, 17205, 17865, 20646, 22940, 23820, 24614, 29378, 34410, 35730, 36921, 41292, 44067, 49228, 51615, 58756, 61535, 68820, 71460, 73445, 73842, 88134, 103230, 110763, 123070, 132201, 146890, 147684, 176268, 184605, 206460, 220335, 221526, 246140, 264402, 293780, 369210, 440670, 443052, 455359, 528804, 553815, 661005, 738420, 881340, 910718, 1107630, 1322010, 1366077, 1821436, 2215260, 2276795, 2644020, 2732154, 4098231, 4553590, 5464308, 6830385, 8196462, 9107180, 13660770, 16392924, 20491155, 27321540, 40982310, 81964620]

約数ペア:

[(1, 81964620), (2, 40982310), (3, 27321540), (4, 20491155), (5, 16392924), (6, 13660770), (9, 9107180), (10, 8196462), (12, 6830385), (15, 5464308), (18, 4553590), (20, 4098231), (30, 2732154), (31, 2644020), (36, 2276795), (37, 2215260), (45, 1821436), (60, 1366077), (62, 1322010), (74, 1107630), (90, 910718), (93, 881340), (111, 738420), (124, 661005), (148, 553815), (155, 528804), (180, 455359), (185, 443052), (186, 440670), (222, 369210), (279, 293780), (310, 264402), (333, 246140), (370, 221526), (372, 220335), (397, 206460), (444, 184605), (465, 176268), (555, 147684), (558, 146890), (620, 132201), (666, 123070), (740, 110763), (794, 103230), (930, 88134), (1110, 73842), (1116, 73445), (1147, 71460), (1191, 68820), (1332, 61535), (1395, 58756), (1588, 51615), (1665, 49228), (1860, 44067), (1985, 41292), (2220, 36921), (2294, 35730), (2382, 34410), (2790, 29378), (3330, 24614), (3441, 23820), (3573, 22940), (3970, 20646), (4588, 17865), (4764, 17205), (5580, 14689), (5735, 14292), (5955, 13764), (6660, 12307), (6882, 11910), (7146, 11470), (7940, 10323)]