21516729

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{6199}}^1$

素因数の和:6304

約数の個数: 16

約数和(自身を含む): 31248000

約数和(自身を除く): 9731271

約数列:

[1, 3, 13, 39, 89, 267, 1157, 3471, 6199, 18597, 80587, 241761, 551711, 1655133, 7172243, 21516729]

約数ペア:

[(1, 21516729), (3, 7172243), (13, 1655133), (39, 551711), (89, 241761), (267, 80587), (1157, 18597), (3471, 6199)]