19553950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:541

約数の個数: 48

約数和(自身を含む): 39841200

約数和(自身を除く): 20287250

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 67, 130, 134, 325, 335, 449, 650, 670, 871, 898, 1675, 1742, 2245, 3350, 4355, 4490, 5837, 8710, 11225, 11674, 21775, 22450, 29185, 30083, 43550, 58370, 60166, 145925, 150415, 291850, 300830, 391079, 752075, 782158, 1504150, 1955395, 3910790, 9776975, 19553950]

約数ペア:

[(1, 19553950), (2, 9776975), (5, 3910790), (10, 1955395), (13, 1504150), (25, 782158), (26, 752075), (50, 391079), (65, 300830), (67, 291850), (130, 150415), (134, 145925), (325, 60166), (335, 58370), (449, 43550), (650, 30083), (670, 29185), (871, 22450), (898, 21775), (1675, 11674), (1742, 11225), (2245, 8710), (3350, 5837), (4355, 4490)]