28211015

素因数分解:

$5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{1019}}^1$

素因数の和:1151

約数の個数: 24

約数和(自身を含む): 39767760

約数和(自身を除く): 11556745

約数列:

[1, 5, 7, 35, 49, 113, 245, 565, 791, 1019, 3955, 5095, 5537, 7133, 27685, 35665, 49931, 115147, 249655, 575735, 806029, 4030145, 5642203, 28211015]

約数ペア:

[(1, 28211015), (5, 5642203), (7, 4030145), (35, 806029), (49, 575735), (113, 249655), (245, 115147), (565, 49931), (791, 35665), (1019, 27685), (3955, 7133), (5095, 5537)]