21249420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4483}}^1$

素因数の和:4574

約数の個数: 48

約数和(自身を含む): 60264960

約数和(自身を除く): 39015540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4483, 4740, 8966, 13449, 17932, 22415, 26898, 44830, 53796, 67245, 89660, 134490, 268980, 354157, 708314, 1062471, 1416628, 1770785, 2124942, 3541570, 4249884, 5312355, 7083140, 10624710, 21249420]

約数ペア:

[(1, 21249420), (2, 10624710), (3, 7083140), (4, 5312355), (5, 4249884), (6, 3541570), (10, 2124942), (12, 1770785), (15, 1416628), (20, 1062471), (30, 708314), (60, 354157), (79, 268980), (158, 134490), (237, 89660), (316, 67245), (395, 53796), (474, 44830), (790, 26898), (948, 22415), (1185, 17932), (1580, 13449), (2370, 8966), (4483, 4740)]