21812620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15361}}^1$

素因数の和:15441

約数の個数: 24

約数和(自身を含む): 46454688

約数和(自身を除く): 24642068

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 15361, 30722, 61444, 76805, 153610, 307220, 1090631, 2181262, 4362524, 5453155, 10906310, 21812620]

約数ペア:

[(1, 21812620), (2, 10906310), (4, 5453155), (5, 4362524), (10, 2181262), (20, 1090631), (71, 307220), (142, 153610), (284, 76805), (355, 61444), (710, 30722), (1420, 15361)]