21751288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209147}}^1$

素因数の和:209166

約数の個数: 16

約数和(自身を含む): 43921080

約数和(自身を除く): 22169792

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209147, 418294, 836588, 1673176, 2718911, 5437822, 10875644, 21751288]

約数ペア:

[(1, 21751288), (2, 10875644), (4, 5437822), (8, 2718911), (13, 1673176), (26, 836588), (52, 418294), (104, 209147)]