21556904

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{86923}}^1$

素因数の和:86960

約数の個数: 16

約数和(自身を含む): 41723520

約数和(自身を除く): 20166616

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 86923, 173846, 347692, 695384, 2694613, 5389226, 10778452, 21556904]

約数ペア:

[(1, 21556904), (2, 10778452), (4, 5389226), (8, 2694613), (31, 695384), (62, 347692), (124, 173846), (248, 86923)]