201921850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{1289}}^1$

素因数の和:1555

約数の個数: 48

約数和(自身を含む): 406458360

約数和(自身を除く): 204536510

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 241, 325, 482, 650, 1205, 1289, 2410, 2578, 3133, 6025, 6266, 6445, 12050, 12890, 15665, 16757, 31330, 32225, 33514, 64450, 78325, 83785, 156650, 167570, 310649, 418925, 621298, 837850, 1553245, 3106490, 4038437, 7766225, 8076874, 15532450, 20192185, 40384370, 100960925, 201921850]

約数ペア:

[(1, 201921850), (2, 100960925), (5, 40384370), (10, 20192185), (13, 15532450), (25, 8076874), (26, 7766225), (50, 4038437), (65, 3106490), (130, 1553245), (241, 837850), (325, 621298), (482, 418925), (650, 310649), (1205, 167570), (1289, 156650), (2410, 83785), (2578, 78325), (3133, 64450), (6025, 33514), (6266, 32225), (6445, 31330), (12050, 16757), (12890, 15665)]