21723420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4583}}^1$

素因数の和:4674

約数の個数: 48

約数和(自身を含む): 61608960

約数和(自身を除く): 39885540

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, 4583, 4740, 9166, 13749, 18332, 22915, 27498, 45830, 54996, 68745, 91660, 137490, 274980, 362057, 724114, 1086171, 1448228, 1810285, 2172342, 3620570, 4344684, 5430855, 7241140, 10861710, 21723420]

約数ペア:

[(1, 21723420), (2, 10861710), (3, 7241140), (4, 5430855), (5, 4344684), (6, 3620570), (10, 2172342), (12, 1810285), (15, 1448228), (20, 1086171), (30, 724114), (60, 362057), (79, 274980), (158, 137490), (237, 91660), (316, 68745), (395, 54996), (474, 45830), (790, 27498), (948, 22915), (1185, 18332), (1580, 13749), (2370, 9166), (4583, 4740)]