21578973

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{1249}}^1$

素因数の和:1708

約数の個数: 16

約数和(自身を含む): 31080000

約数和(自身を除く): 9501027

約数列:

[1, 3, 13, 39, 443, 1249, 1329, 3747, 5759, 16237, 17277, 48711, 553307, 1659921, 7192991, 21578973]

約数ペア:

[(1, 21578973), (3, 7192991), (13, 1659921), (39, 553307), (443, 48711), (1249, 17277), (1329, 16237), (3747, 5759)]