84920840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{977}}^1$

素因数の和:1082

約数の個数: 64

約数和(自身を含む): 199629360

約数和(自身を除く): 114708520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 53, 82, 106, 164, 205, 212, 265, 328, 410, 424, 530, 820, 977, 1060, 1640, 1954, 2120, 2173, 3908, 4346, 4885, 7816, 8692, 9770, 10865, 17384, 19540, 21730, 39080, 40057, 43460, 51781, 80114, 86920, 103562, 160228, 200285, 207124, 258905, 320456, 400570, 414248, 517810, 801140, 1035620, 1602280, 2071240, 2123021, 4246042, 8492084, 10615105, 16984168, 21230210, 42460420, 84920840]

約数ペア:

[(1, 84920840), (2, 42460420), (4, 21230210), (5, 16984168), (8, 10615105), (10, 8492084), (20, 4246042), (40, 2123021), (41, 2071240), (53, 1602280), (82, 1035620), (106, 801140), (164, 517810), (205, 414248), (212, 400570), (265, 320456), (328, 258905), (410, 207124), (424, 200285), (530, 160228), (820, 103562), (977, 86920), (1060, 80114), (1640, 51781), (1954, 43460), (2120, 40057), (2173, 39080), (3908, 21730), (4346, 19540), (4885, 17384), (7816, 10865), (8692, 9770)]