65490940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79867}}^1$

素因数の和:79917

約数の個数: 24

約数和(自身を含む): 140887152

約数和(自身を除く): 75396212

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 79867, 159734, 319468, 399335, 798670, 1597340, 3274547, 6549094, 13098188, 16372735, 32745470, 65490940]

約数ペア:

[(1, 65490940), (2, 32745470), (4, 16372735), (5, 13098188), (10, 6549094), (20, 3274547), (41, 1597340), (82, 798670), (164, 399335), (205, 319468), (410, 159734), (820, 79867)]