20147920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19373}}^1$

素因数の和:19399

約数の個数: 40

約数和(自身を含む): 50449896

約数和(自身を除く): 30301976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19373, 38746, 77492, 96865, 154984, 193730, 251849, 309968, 387460, 503698, 774920, 1007396, 1259245, 1549840, 2014792, 2518490, 4029584, 5036980, 10073960, 20147920]

約数ペア:

[(1, 20147920), (2, 10073960), (4, 5036980), (5, 4029584), (8, 2518490), (10, 2014792), (13, 1549840), (16, 1259245), (20, 1007396), (26, 774920), (40, 503698), (52, 387460), (65, 309968), (80, 251849), (104, 193730), (130, 154984), (208, 96865), (260, 77492), (520, 38746), (1040, 19373)]