31981815

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5113}}^1$

素因数の和:5263

約数の個数: 24

約数和(自身を含む): 55844880

約数和(自身を除く): 23863065

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 5113, 6255, 15339, 25565, 46017, 76695, 230085, 710707, 2132121, 3553535, 6396363, 10660605, 31981815]

約数ペア:

[(1, 31981815), (3, 10660605), (5, 6396363), (9, 3553535), (15, 2132121), (45, 710707), (139, 230085), (417, 76695), (695, 46017), (1251, 25565), (2085, 15339), (5113, 6255)]