389940255

素因数分解:

$3^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{20681}}^1$

素因数の和:21111

約数の個数: 24

約数和(自身を含む): 677542320

約数和(自身を除く): 287602065

約数列:

[1, 3, 5, 9, 15, 45, 419, 1257, 2095, 3771, 6285, 18855, 20681, 62043, 103405, 186129, 310215, 930645, 8665339, 25996017, 43326695, 77988051, 129980085, 389940255]

約数ペア:

[(1, 389940255), (3, 129980085), (5, 77988051), (9, 43326695), (15, 25996017), (45, 8665339), (419, 930645), (1257, 310215), (2095, 186129), (3771, 103405), (6285, 62043), (18855, 20681)]