12651875

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:704

約数の個数: 20

約数和(自身を含む): 16344768

約数和(自身を除く): 3692893

約数列:

[1, 5, 25, 31, 125, 155, 625, 653, 775, 3265, 3875, 16325, 19375, 20243, 81625, 101215, 408125, 506075, 2530375, 12651875]

約数ペア:

[(1, 12651875), (5, 2530375), (25, 506075), (31, 408125), (125, 101215), (155, 81625), (625, 20243), (653, 19375), (775, 16325), (3265, 3875)]