20849570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1999}}^1$

素因数の和:2162

約数の個数: 32

約数和(自身を含む): 43200000

約数和(自身を除く): 22350430

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 149, 298, 745, 1043, 1490, 1999, 2086, 3998, 5215, 9995, 10430, 13993, 19990, 27986, 69965, 139930, 297851, 595702, 1489255, 2084957, 2978510, 4169914, 10424785, 20849570]

約数ペア:

[(1, 20849570), (2, 10424785), (5, 4169914), (7, 2978510), (10, 2084957), (14, 1489255), (35, 595702), (70, 297851), (149, 139930), (298, 69965), (745, 27986), (1043, 19990), (1490, 13993), (1999, 10430), (2086, 9995), (3998, 5215)]