21270561

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{1031}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 31958976

約数和(自身を除く): 10688415

約数列:

[1, 3, 13, 23, 39, 69, 299, 529, 897, 1031, 1587, 3093, 6877, 13403, 20631, 23713, 40209, 71139, 308269, 545399, 924807, 1636197, 7090187, 21270561]

約数ペア:

[(1, 21270561), (3, 7090187), (13, 1636197), (23, 924807), (39, 545399), (69, 308269), (299, 71139), (529, 40209), (897, 23713), (1031, 20631), (1587, 13403), (3093, 6877)]