21521019

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{1229}}^1$

素因数の和:1694

約数の個数: 16

約数和(自身を含む): 30996000

約数和(自身を除く): 9474981

約数列:

[1, 3, 13, 39, 449, 1229, 1347, 3687, 5837, 15977, 17511, 47931, 551821, 1655463, 7173673, 21521019]

約数ペア:

[(1, 21521019), (3, 7173673), (13, 1655463), (39, 551821), (449, 47931), (1229, 17511), (1347, 15977), (3687, 5837)]