12980560

素因数分解:

$2^4\times 5^1\times {\mathrm{162257}}^1$

素因数の和:162270

約数の個数: 20

約数和(自身を含む): 30179988

約数和(自身を除く): 17199428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 162257, 324514, 649028, 811285, 1298056, 1622570, 2596112, 3245140, 6490280, 12980560]

約数ペア:

[(1, 12980560), (2, 6490280), (4, 3245140), (5, 2596112), (8, 1622570), (10, 1298056), (16, 811285), (20, 649028), (40, 324514), (80, 162257)]