20402421

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{3511}}^1$

素因数の和:3676

約数の個数: 16

約数和(自身を含む): 29500800

約数和(自身を除く): 9098379

約数列:

[1, 3, 13, 39, 149, 447, 1937, 3511, 5811, 10533, 45643, 136929, 523139, 1569417, 6800807, 20402421]

約数ペア:

[(1, 20402421), (3, 6800807), (13, 1569417), (39, 523139), (149, 136929), (447, 45643), (1937, 10533), (3511, 5811)]