21897240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{727}}^1$

素因数の和:992

約数の個数: 64

約数和(自身を含む): 66044160

約数和(自身を除く): 44146920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 251, 502, 727, 753, 1004, 1255, 1454, 1506, 2008, 2181, 2510, 2908, 3012, 3635, 3765, 4362, 5020, 5816, 6024, 7270, 7530, 8724, 10040, 10905, 14540, 15060, 17448, 21810, 29080, 30120, 43620, 87240, 182477, 364954, 547431, 729908, 912385, 1094862, 1459816, 1824770, 2189724, 2737155, 3649540, 4379448, 5474310, 7299080, 10948620, 21897240]

約数ペア:

[(1, 21897240), (2, 10948620), (3, 7299080), (4, 5474310), (5, 4379448), (6, 3649540), (8, 2737155), (10, 2189724), (12, 1824770), (15, 1459816), (20, 1094862), (24, 912385), (30, 729908), (40, 547431), (60, 364954), (120, 182477), (251, 87240), (502, 43620), (727, 30120), (753, 29080), (1004, 21810), (1255, 17448), (1454, 15060), (1506, 14540), (2008, 10905), (2181, 10040), (2510, 8724), (2908, 7530), (3012, 7270), (3635, 6024), (3765, 5816), (4362, 5020)]