21945220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4337}}^1$

素因数の和:4380

約数の個数: 48

約数和(自身を含む): 52472448

約数和(自身を除く): 30527228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 4337, 5060, 8674, 17348, 21685, 43370, 47707, 86740, 95414, 99751, 190828, 199502, 238535, 399004, 477070, 498755, 954140, 997510, 1097261, 1995020, 2194522, 4389044, 5486305, 10972610, 21945220]

約数ペア:

[(1, 21945220), (2, 10972610), (4, 5486305), (5, 4389044), (10, 2194522), (11, 1995020), (20, 1097261), (22, 997510), (23, 954140), (44, 498755), (46, 477070), (55, 399004), (92, 238535), (110, 199502), (115, 190828), (220, 99751), (230, 95414), (253, 86740), (460, 47707), (506, 43370), (1012, 21685), (1265, 17348), (2530, 8674), (4337, 5060)]