21081920

素因数分解:

$2^6\times 5^1\times {\mathrm{65881}}^1$

素因数の和:65898

約数の個数: 28

約数和(自身を含む): 50202084

約数和(自身を除く): 29120164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65881, 131762, 263524, 329405, 527048, 658810, 1054096, 1317620, 2108192, 2635240, 4216384, 5270480, 10540960, 21081920]

約数ペア:

[(1, 21081920), (2, 10540960), (4, 5270480), (5, 4216384), (8, 2635240), (10, 2108192), (16, 1317620), (20, 1054096), (32, 658810), (40, 527048), (64, 329405), (80, 263524), (160, 131762), (320, 65881)]