21281229

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{379}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 32722560

約数和(自身を除く): 11441331

約数列:

[1, 3, 9, 17, 51, 153, 367, 379, 1101, 1137, 3303, 3411, 6239, 6443, 18717, 19329, 56151, 57987, 139093, 417279, 1251837, 2364581, 7093743, 21281229]

約数ペア:

[(1, 21281229), (3, 7093743), (9, 2364581), (17, 1251837), (51, 417279), (153, 139093), (367, 57987), (379, 56151), (1101, 19329), (1137, 18717), (3303, 6443), (3411, 6239)]