208654870

素因数分解:

$2^1\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{10501}}^1$

素因数の和:12495

約数の個数: 16

約数和(自身を含む): 375803568

約数和(自身を除く): 167148698

約数列:

[1, 2, 5, 10, 1987, 3974, 9935, 10501, 19870, 21002, 52505, 105010, 20865487, 41730974, 104327435, 208654870]

約数ペア:

[(1, 208654870), (2, 104327435), (5, 41730974), (10, 20865487), (1987, 105010), (3974, 52505), (9935, 21002), (10501, 19870)]