81976125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1$

素因数の和:220

約数の個数: 128

約数和(自身を含む): 181149696

約数和(自身を除く): 99173571

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 25, 33, 35, 51, 55, 75, 77, 85, 105, 119, 125, 165, 167, 175, 187, 231, 255, 275, 357, 375, 385, 425, 501, 525, 561, 595, 825, 835, 875, 935, 1155, 1169, 1275, 1309, 1375, 1785, 1837, 1925, 2125, 2505, 2625, 2805, 2839, 2975, 3507, 3927, 4125, 4175, 4675, 5511, 5775, 5845, 6375, 6545, 8517, 8925, 9185, 9625, 12525, 12859, 14025, 14195, 14875, 17535, 19635, 19873, 20875, 23375, 27555, 28875, 29225, 31229, 32725, 38577, 42585, 44625, 45925, 59619, 62625, 64295, 70125, 70975, 87675, 93687, 98175, 99365, 137775, 146125, 156145, 163625, 192885, 212925, 218603, 229625, 298095, 321475, 354875, 438375, 468435, 490875, 496825, 655809, 688875, 780725, 964425, 1064625, 1093015, 1490475, 1607375, 2342175, 2484125, 3279045, 3903625, 4822125, 5465075, 7452375, 11710875, 16395225, 27325375, 81976125]

約数ペア:

[(1, 81976125), (3, 27325375), (5, 16395225), (7, 11710875), (11, 7452375), (15, 5465075), (17, 4822125), (21, 3903625), (25, 3279045), (33, 2484125), (35, 2342175), (51, 1607375), (55, 1490475), (75, 1093015), (77, 1064625), (85, 964425), (105, 780725), (119, 688875), (125, 655809), (165, 496825), (167, 490875), (175, 468435), (187, 438375), (231, 354875), (255, 321475), (275, 298095), (357, 229625), (375, 218603), (385, 212925), (425, 192885), (501, 163625), (525, 156145), (561, 146125), (595, 137775), (825, 99365), (835, 98175), (875, 93687), (935, 87675), (1155, 70975), (1169, 70125), (1275, 64295), (1309, 62625), (1375, 59619), (1785, 45925), (1837, 44625), (1925, 42585), (2125, 38577), (2505, 32725), (2625, 31229), (2805, 29225), (2839, 28875), (2975, 27555), (3507, 23375), (3927, 20875), (4125, 19873), (4175, 19635), (4675, 17535), (5511, 14875), (5775, 14195), (5845, 14025), (6375, 12859), (6545, 12525), (8517, 9625), (8925, 9185)]