66418360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40499}}^1$

素因数の和:40551

約数の個数: 32

約数和(自身を含む): 153090000

約数和(自身を除く): 86671640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 40499, 80998, 161996, 202495, 323992, 404990, 809980, 1619960, 1660459, 3320918, 6641836, 8302295, 13283672, 16604590, 33209180, 66418360]

約数ペア:

[(1, 66418360), (2, 33209180), (4, 16604590), (5, 13283672), (8, 8302295), (10, 6641836), (20, 3320918), (40, 1660459), (41, 1619960), (82, 809980), (164, 404990), (205, 323992), (328, 202495), (410, 161996), (820, 80998), (1640, 40499)]