81072915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4129}}^1$

素因数の和:4172

約数の個数: 64

約数和(自身を含む): 171279360

約数和(自身を除く): 90206445

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 33, 35, 51, 55, 77, 85, 105, 119, 165, 187, 231, 255, 357, 385, 561, 595, 935, 1155, 1309, 1785, 2805, 3927, 4129, 6545, 12387, 19635, 20645, 28903, 45419, 61935, 70193, 86709, 136257, 144515, 210579, 227095, 317933, 350965, 433545, 491351, 681285, 772123, 953799, 1052895, 1474053, 1589665, 2316369, 2456755, 3860615, 4768995, 5404861, 7370265, 11581845, 16214583, 27024305, 81072915]

約数ペア:

[(1, 81072915), (3, 27024305), (5, 16214583), (7, 11581845), (11, 7370265), (15, 5404861), (17, 4768995), (21, 3860615), (33, 2456755), (35, 2316369), (51, 1589665), (55, 1474053), (77, 1052895), (85, 953799), (105, 772123), (119, 681285), (165, 491351), (187, 433545), (231, 350965), (255, 317933), (357, 227095), (385, 210579), (561, 144515), (595, 136257), (935, 86709), (1155, 70193), (1309, 61935), (1785, 45419), (2805, 28903), (3927, 20645), (4129, 19635), (6545, 12387)]