87904820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{107201}}^1$

素因数の和:107251

約数の個数: 24

約数和(自身を含む): 189104328

約数和(自身を除く): 101199508

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 107201, 214402, 428804, 536005, 1072010, 2144020, 4395241, 8790482, 17580964, 21976205, 43952410, 87904820]

約数ペア:

[(1, 87904820), (2, 43952410), (4, 21976205), (5, 17580964), (10, 8790482), (20, 4395241), (41, 2144020), (82, 1072010), (164, 536005), (205, 428804), (410, 214402), (820, 107201)]