71638640

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{8369}}^1$

素因数の和:8489

約数の個数: 40

約数和(自身を含む): 168136560

約数和(自身を除く): 96497920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 4280, 8369, 8560, 16738, 33476, 41845, 66952, 83690, 133904, 167380, 334760, 669520, 895483, 1790966, 3581932, 4477415, 7163864, 8954830, 14327728, 17909660, 35819320, 71638640]

約数ペア:

[(1, 71638640), (2, 35819320), (4, 17909660), (5, 14327728), (8, 8954830), (10, 7163864), (16, 4477415), (20, 3581932), (40, 1790966), (80, 895483), (107, 669520), (214, 334760), (428, 167380), (535, 133904), (856, 83690), (1070, 66952), (1712, 41845), (2140, 33476), (4280, 16738), (8369, 8560)]