78817420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1499}}^1$

素因数の和:1758

約数の個数: 48

約数和(自身を含む): 181440000

約数和(自身を除く): 102622580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 239, 478, 956, 1195, 1499, 2390, 2629, 2998, 4780, 5258, 5996, 7495, 10516, 13145, 14990, 16489, 26290, 29980, 32978, 52580, 65956, 82445, 164890, 329780, 358261, 716522, 1433044, 1791305, 3582610, 3940871, 7165220, 7881742, 15763484, 19704355, 39408710, 78817420]

約数ペア:

[(1, 78817420), (2, 39408710), (4, 19704355), (5, 15763484), (10, 7881742), (11, 7165220), (20, 3940871), (22, 3582610), (44, 1791305), (55, 1433044), (110, 716522), (220, 358261), (239, 329780), (478, 164890), (956, 82445), (1195, 65956), (1499, 52580), (2390, 32978), (2629, 29980), (2998, 26290), (4780, 16489), (5258, 14990), (5996, 13145), (7495, 10516)]