21401956

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 38283840

約数和(自身を除く): 16881884

約数列:

[1, 2, 4, 71, 142, 179, 284, 358, 421, 716, 842, 1684, 12709, 25418, 29891, 50836, 59782, 75359, 119564, 150718, 301436, 5350489, 10700978, 21401956]

約数ペア:

[(1, 21401956), (2, 10700978), (4, 5350489), (71, 301436), (142, 150718), (179, 119564), (284, 75359), (358, 59782), (421, 50836), (716, 29891), (842, 25418), (1684, 12709)]