201990428518

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{19553}}^1\times {\mathrm{120121}}^1$

素因数の和:139719

約数の個数: 16

約数和(自身を含む): 310050257616

約数和(自身を除く): 108059829098

約数列:

[1, 2, 43, 86, 19553, 39106, 120121, 240242, 840779, 1681558, 5165203, 10330406, 2348725913, 4697451826, 100995214259, 201990428518]

約数ペア:

[(1, 201990428518), (2, 100995214259), (43, 4697451826), (86, 2348725913), (19553, 10330406), (39106, 5165203), (120121, 1681558), (240242, 840779)]