20864719850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1689451}}^1$

素因数の和:1689495

約数の個数: 48

約数和(自身を含む): 43993330080

約数和(自身を除く): 23128610230

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 38, 50, 65, 95, 130, 190, 247, 325, 475, 494, 650, 950, 1235, 2470, 6175, 12350, 1689451, 3378902, 8447255, 16894510, 21962863, 32099569, 42236275, 43925726, 64199138, 84472550, 109814315, 160497845, 219628630, 320995690, 417294397, 549071575, 802489225, 834588794, 1098143150, 1604978450, 2086471985, 4172943970, 10432359925, 20864719850]

約数ペア:

[(1, 20864719850), (2, 10432359925), (5, 4172943970), (10, 2086471985), (13, 1604978450), (19, 1098143150), (25, 834588794), (26, 802489225), (38, 549071575), (50, 417294397), (65, 320995690), (95, 219628630), (130, 160497845), (190, 109814315), (247, 84472550), (325, 64199138), (475, 43925726), (494, 42236275), (650, 32099569), (950, 21962863), (1235, 16894510), (2470, 8447255), (6175, 3378902), (12350, 1689451)]