20624690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1487}}^1$

素因数の和:1586

約数の個数: 32

約数和(自身を含む): 39640320

約数和(自身を除く): 19015630

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1487, 2774, 2974, 6935, 7435, 13870, 14870, 28253, 56506, 108551, 141265, 217102, 282530, 542755, 1085510, 2062469, 4124938, 10312345, 20624690]

約数ペア:

[(1, 20624690), (2, 10312345), (5, 4124938), (10, 2062469), (19, 1085510), (38, 542755), (73, 282530), (95, 217102), (146, 141265), (190, 108551), (365, 56506), (730, 28253), (1387, 14870), (1487, 13870), (2774, 7435), (2974, 6935)]