21507603

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{8231}}^1$

素因数の和:8314

約数の個数: 16

約数和(自身を含む): 31347456

約数和(自身を除く): 9839853

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 8231, 24693, 107003, 321009, 551477, 1654431, 7169201, 21507603]

約数ペア:

[(1, 21507603), (3, 7169201), (13, 1654431), (39, 551477), (67, 321009), (201, 107003), (871, 24693), (2613, 8231)]