20621540

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3833}}^1$

素因数の和:4111

約数の個数: 24

約数和(自身を含む): 43477560

約数和(自身を除く): 22856020

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3833, 5380, 7666, 15332, 19165, 38330, 76660, 1031077, 2062154, 4124308, 5155385, 10310770, 20621540]

約数ペア:

[(1, 20621540), (2, 10310770), (4, 5155385), (5, 4124308), (10, 2062154), (20, 1031077), (269, 76660), (538, 38330), (1076, 19165), (1345, 15332), (2690, 7666), (3833, 5380)]