20091565

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:134

約数の個数: 32

約数和(自身を含む): 27417600

約数和(自身を除く): 7326035

約数列:

[1, 5, 13, 31, 59, 65, 155, 169, 295, 403, 767, 845, 1829, 2015, 2197, 3835, 5239, 9145, 9971, 10985, 23777, 26195, 49855, 68107, 118885, 129623, 309101, 340535, 648115, 1545505, 4018313, 20091565]

約数ペア:

[(1, 20091565), (5, 4018313), (13, 1545505), (31, 648115), (59, 340535), (65, 309101), (155, 129623), (169, 118885), (295, 68107), (403, 49855), (767, 26195), (845, 23777), (1829, 10985), (2015, 9971), (2197, 9145), (3835, 5239)]