21979908

素因数分解:

$2^2\times 3^2\times {\mathrm{610553}}^1$

素因数の和:610563

約数の個数: 18

約数和(自身を含む): 55560414

約数和(自身を除く): 33580506

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610553, 1221106, 1831659, 2442212, 3663318, 5494977, 7326636, 10989954, 21979908]

約数ペア:

[(1, 21979908), (2, 10989954), (3, 7326636), (4, 5494977), (6, 3663318), (9, 2442212), (12, 1831659), (18, 1221106), (36, 610553)]