21089608

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{607}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 40930560

約数和(自身を除く): 19840952

約数列:

[1, 2, 4, 8, 43, 86, 101, 172, 202, 344, 404, 607, 808, 1214, 2428, 4343, 4856, 8686, 17372, 26101, 34744, 52202, 61307, 104404, 122614, 208808, 245228, 490456, 2636201, 5272402, 10544804, 21089608]

約数ペア:

[(1, 21089608), (2, 10544804), (4, 5272402), (8, 2636201), (43, 490456), (86, 245228), (101, 208808), (172, 122614), (202, 104404), (344, 61307), (404, 52202), (607, 34744), (808, 26101), (1214, 17372), (2428, 8686), (4343, 4856)]