21619664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{122839}}^1$

素因数の和:122858

約数の個数: 20

約数和(自身を含む): 45696480

約数和(自身を除く): 24076816

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 122839, 245678, 491356, 982712, 1351229, 1965424, 2702458, 5404916, 10809832, 21619664]

約数ペア:

[(1, 21619664), (2, 10809832), (4, 5404916), (8, 2702458), (11, 1965424), (16, 1351229), (22, 982712), (44, 491356), (88, 245678), (176, 122839)]