21091664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{119839}}^1$

素因数の和:119858

約数の個数: 20

約数和(自身を含む): 44580480

約数和(自身を除く): 23488816

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 119839, 239678, 479356, 958712, 1318229, 1917424, 2636458, 5272916, 10545832, 21091664]

約数ペア:

[(1, 21091664), (2, 10545832), (4, 5272916), (8, 2636458), (11, 1917424), (16, 1318229), (22, 958712), (44, 479356), (88, 239678), (176, 119839)]