21102521

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 24961440

約数和(自身を除く): 3858919

約数列:

[1, 11, 19, 67, 121, 137, 209, 737, 1273, 1507, 2299, 2603, 8107, 9179, 14003, 16577, 28633, 100969, 154033, 174401, 314963, 1110659, 1918411, 21102521]

約数ペア:

[(1, 21102521), (11, 1918411), (19, 1110659), (67, 314963), (121, 174401), (137, 154033), (209, 100969), (737, 28633), (1273, 16577), (1507, 14003), (2299, 9179), (2603, 8107)]