20120031

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1213}}^1$

素因数の和:1335

約数の個数: 24

約数和(自身を含む): 30932720

約数和(自身を除く): 10812689

約数列:

[1, 3, 9, 19, 57, 97, 171, 291, 873, 1213, 1843, 3639, 5529, 10917, 16587, 23047, 69141, 117661, 207423, 352983, 1058949, 2235559, 6706677, 20120031]

約数ペア:

[(1, 20120031), (3, 6706677), (9, 2235559), (19, 1058949), (57, 352983), (97, 207423), (171, 117661), (291, 69141), (873, 23047), (1213, 16587), (1843, 10917), (3639, 5529)]