21125624

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2861}}^1$

素因数の和:2951

約数の個数: 32

約数和(自身を含む): 43273440

約数和(自身を除く): 22147816

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2861, 3692, 5722, 7384, 11444, 22888, 37193, 74386, 148772, 203131, 297544, 406262, 812524, 1625048, 2640703, 5281406, 10562812, 21125624]

約数ペア:

[(1, 21125624), (2, 10562812), (4, 5281406), (8, 2640703), (13, 1625048), (26, 812524), (52, 406262), (71, 297544), (104, 203131), (142, 148772), (284, 74386), (568, 37193), (923, 22888), (1846, 11444), (2861, 7384), (3692, 5722)]