21028173

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1\times {\mathrm{487}}^1$

素因数の和:916

約数の個数: 16

約数和(自身を含む): 28928640

約数和(自身を除く): 7900467

約数列:

[1, 3, 37, 111, 389, 487, 1167, 1461, 14393, 18019, 43179, 54057, 189443, 568329, 7009391, 21028173]

約数ペア:

[(1, 21028173), (3, 7009391), (37, 568329), (111, 189443), (389, 54057), (487, 43179), (1167, 18019), (1461, 14393)]