21031160

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1171}}^1$

素因数の和:1631

約数の個数: 32

約数和(自身を含む): 47466000

約数和(自身を除く): 26434840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1171, 1796, 2245, 2342, 3592, 4490, 4684, 5855, 8980, 9368, 11710, 17960, 23420, 46840, 525779, 1051558, 2103116, 2628895, 4206232, 5257790, 10515580, 21031160]

約数ペア:

[(1, 21031160), (2, 10515580), (4, 5257790), (5, 4206232), (8, 2628895), (10, 2103116), (20, 1051558), (40, 525779), (449, 46840), (898, 23420), (1171, 17960), (1796, 11710), (2245, 9368), (2342, 8980), (3592, 5855), (4490, 4684)]