18878380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30449}}^1$

素因数の和:30489

約数の個数: 24

約数和(自身を含む): 40924800

約数和(自身を除く): 22046420

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30449, 60898, 121796, 152245, 304490, 608980, 943919, 1887838, 3775676, 4719595, 9439190, 18878380]

約数ペア:

[(1, 18878380), (2, 9439190), (4, 4719595), (5, 3775676), (10, 1887838), (20, 943919), (31, 608980), (62, 304490), (124, 152245), (155, 121796), (310, 60898), (620, 30449)]