81980780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{585577}}^1$

素因数の和:585593

約数の個数: 24

約数和(自身を含む): 196754208

約数和(自身を除く): 114773428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 585577, 1171154, 2342308, 2927885, 4099039, 5855770, 8198078, 11711540, 16396156, 20495195, 40990390, 81980780]

約数ペア:

[(1, 81980780), (2, 40990390), (4, 20495195), (5, 16396156), (7, 11711540), (10, 8198078), (14, 5855770), (20, 4099039), (28, 2927885), (35, 2342308), (70, 1171154), (140, 585577)]