28288940

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{4519}}^1$

素因数の和:4841

約数の個数: 24

約数和(自身を含む): 59609760

約数和(自身を除く): 31320820

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 4519, 6260, 9038, 18076, 22595, 45190, 90380, 1414447, 2828894, 5657788, 7072235, 14144470, 28288940]

約数ペア:

[(1, 28288940), (2, 14144470), (4, 7072235), (5, 5657788), (10, 2828894), (20, 1414447), (313, 90380), (626, 45190), (1252, 22595), (1565, 18076), (3130, 9038), (4519, 6260)]