21971839

素因数分解:

${\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:438

約数の個数: 16

約数和(自身を含む): 23721984

約数和(自身を除く): 1750145

約数列:

[1, 31, 43, 53, 311, 1333, 1643, 2279, 9641, 13373, 16483, 70649, 414563, 510973, 708769, 21971839]

約数ペア:

[(1, 21971839), (31, 708769), (43, 510973), (53, 414563), (311, 70649), (1333, 16483), (1643, 13373), (2279, 9641)]