218219985

素因数分解:

$3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{18869}}^1$

素因数の和:19137

約数の個数: 24

約数和(自身を含む): 379739880

約数和(自身を除く): 161519895

約数列:

[1, 3, 5, 9, 15, 45, 257, 771, 1285, 2313, 3855, 11565, 18869, 56607, 94345, 169821, 283035, 849105, 4849333, 14547999, 24246665, 43643997, 72739995, 218219985]

約数ペア:

[(1, 218219985), (3, 72739995), (5, 43643997), (9, 24246665), (15, 14547999), (45, 4849333), (257, 849105), (771, 283035), (1285, 169821), (2313, 94345), (3855, 56607), (11565, 18869)]