9780781660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37618391}}^1$

素因数の和:37618413

約数の個数: 24

約数和(自身を含む): 22119614496

約数和(自身を除く): 12338832836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 37618391, 75236782, 150473564, 188091955, 376183910, 489039083, 752367820, 978078166, 1956156332, 2445195415, 4890390830, 9780781660]

約数ペア:

[(1, 9780781660), (2, 4890390830), (4, 2445195415), (5, 1956156332), (10, 978078166), (13, 752367820), (20, 489039083), (26, 376183910), (52, 188091955), (65, 150473564), (130, 75236782), (260, 37618391)]