21238120

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2339}}^1$

素因数の和:2577

約数の個数: 32

約数和(自身を含む): 48016800

約数和(自身を除く): 26778680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2339, 4540, 4678, 9080, 9356, 11695, 18712, 23390, 46780, 93560, 530953, 1061906, 2123812, 2654765, 4247624, 5309530, 10619060, 21238120]

約数ペア:

[(1, 21238120), (2, 10619060), (4, 5309530), (5, 4247624), (8, 2654765), (10, 2123812), (20, 1061906), (40, 530953), (227, 93560), (454, 46780), (908, 23390), (1135, 18712), (1816, 11695), (2270, 9356), (2339, 9080), (4540, 4678)]