30780985

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{2797}}^1$

素因数の和:2904

約数の個数: 16

約数和(自身を含む): 38679552

約数和(自身を除く): 7898567

約数列:

[1, 5, 31, 71, 155, 355, 2201, 2797, 11005, 13985, 86707, 198587, 433535, 992935, 6156197, 30780985]

約数ペア:

[(1, 30780985), (5, 6156197), (31, 992935), (71, 433535), (155, 198587), (355, 86707), (2201, 13985), (2797, 11005)]