2020166840

素因数分解:

$2^3\times 5^1\times {\mathrm{3617}}^1\times {\mathrm{13963}}^1$

素因数の和:17591

約数の個数: 32

約数和(自身を含む): 4546957680

約数和(自身を除く): 2526790840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3617, 7234, 13963, 14468, 18085, 27926, 28936, 36170, 55852, 69815, 72340, 111704, 139630, 144680, 279260, 558520, 50504171, 101008342, 202016684, 252520855, 404033368, 505041710, 1010083420, 2020166840]

約数ペア:

[(1, 2020166840), (2, 1010083420), (4, 505041710), (5, 404033368), (8, 252520855), (10, 202016684), (20, 101008342), (40, 50504171), (3617, 558520), (7234, 279260), (13963, 144680), (14468, 139630), (18085, 111704), (27926, 72340), (28936, 69815), (36170, 55852)]