20515150

素因数分解:

$2^1\times 5^2\times {\mathrm{113}}^1\times {\mathrm{3631}}^1$

素因数の和:3756

約数の個数: 24

約数和(自身を含む): 38506464

約数和(自身を除く): 17991314

約数列:

[1, 2, 5, 10, 25, 50, 113, 226, 565, 1130, 2825, 3631, 5650, 7262, 18155, 36310, 90775, 181550, 410303, 820606, 2051515, 4103030, 10257575, 20515150]

約数ペア:

[(1, 20515150), (2, 10257575), (5, 4103030), (10, 2051515), (25, 820606), (50, 410303), (113, 181550), (226, 90775), (565, 36310), (1130, 18155), (2825, 7262), (3631, 5650)]