265549960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{1213}}^1$

素因数の和:1658

約数の個数: 64

約数和(自身を含む): 645508080

約数和(自身を除く): 379958120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 421, 520, 842, 1213, 1684, 2105, 2426, 3368, 4210, 4852, 5473, 6065, 8420, 9704, 10946, 12130, 15769, 16840, 21892, 24260, 27365, 31538, 43784, 48520, 54730, 63076, 78845, 109460, 126152, 157690, 218920, 315380, 510673, 630760, 1021346, 2042692, 2553365, 4085384, 5106730, 6638749, 10213460, 13277498, 20426920, 26554996, 33193745, 53109992, 66387490, 132774980, 265549960]

約数ペア:

[(1, 265549960), (2, 132774980), (4, 66387490), (5, 53109992), (8, 33193745), (10, 26554996), (13, 20426920), (20, 13277498), (26, 10213460), (40, 6638749), (52, 5106730), (65, 4085384), (104, 2553365), (130, 2042692), (260, 1021346), (421, 630760), (520, 510673), (842, 315380), (1213, 218920), (1684, 157690), (2105, 126152), (2426, 109460), (3368, 78845), (4210, 63076), (4852, 54730), (5473, 48520), (6065, 43784), (8420, 31538), (9704, 27365), (10946, 24260), (12130, 21892), (15769, 16840)]