21491396546

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7965677}}^1$

素因数の和:7965769

約数の個数: 16

約数和(自身を含む): 34411728960

約数和(自身を除く): 12920332414

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 7965677, 15931354, 151347863, 302695726, 565563067, 1131126134, 10745698273, 21491396546]

約数ペア:

[(1, 21491396546), (2, 10745698273), (19, 1131126134), (38, 565563067), (71, 302695726), (142, 151347863), (1349, 15931354), (2698, 7965677)]