21954620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15461}}^1$

素因数の和:15541

約数の個数: 24

約数和(自身を含む): 46757088

約数和(自身を除く): 24802468

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 15461, 30922, 61844, 77305, 154610, 309220, 1097731, 2195462, 4390924, 5488655, 10977310, 21954620]

約数ペア:

[(1, 21954620), (2, 10977310), (4, 5488655), (5, 4390924), (10, 2195462), (20, 1097731), (71, 309220), (142, 154610), (284, 77305), (355, 61844), (710, 30922), (1420, 15461)]