21720646

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{1571}}^1$

素因数の和:1827

約数の個数: 16

約数和(自身を含む): 33804288

約数和(自身を除く): 12083642

約数列:

[1, 2, 31, 62, 223, 446, 1571, 3142, 6913, 13826, 48701, 97402, 350333, 700666, 10860323, 21720646]

約数ペア:

[(1, 21720646), (2, 10860323), (31, 700666), (62, 350333), (223, 97402), (446, 48701), (1571, 13826), (3142, 6913)]