21416636

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{3911}}^1$

素因数の和:3989

約数の個数: 18

約数和(自身を含む): 38529288

約数和(自身を除く): 17112652

約数列:

[1, 2, 4, 37, 74, 148, 1369, 2738, 3911, 5476, 7822, 15644, 144707, 289414, 578828, 5354159, 10708318, 21416636]

約数ペア:

[(1, 21416636), (2, 10708318), (4, 5354159), (37, 578828), (74, 289414), (148, 144707), (1369, 15644), (2738, 7822), (3911, 5476)]