21804118

素因数分解:

$2^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{821}}^1$

素因数の和:1108

約数の個数: 24

約数和(自身を含む): 38232864

約数和(自身を除く): 16428746

約数列:

[1, 2, 7, 14, 49, 98, 271, 542, 821, 1642, 1897, 3794, 5747, 11494, 13279, 26558, 40229, 80458, 222491, 444982, 1557437, 3114874, 10902059, 21804118]

約数ペア:

[(1, 21804118), (2, 10902059), (7, 3114874), (14, 1557437), (49, 444982), (98, 222491), (271, 80458), (542, 40229), (821, 26558), (1642, 13279), (1897, 11494), (3794, 5747)]