20457240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{227}}^1\times {\mathrm{751}}^1$

素因数の和:992

約数の個数: 64

約数和(自身を含む): 61724160

約数和(自身を除く): 41266920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 227, 454, 681, 751, 908, 1135, 1362, 1502, 1816, 2253, 2270, 2724, 3004, 3405, 3755, 4506, 4540, 5448, 6008, 6810, 7510, 9012, 9080, 11265, 13620, 15020, 18024, 22530, 27240, 30040, 45060, 90120, 170477, 340954, 511431, 681908, 852385, 1022862, 1363816, 1704770, 2045724, 2557155, 3409540, 4091448, 5114310, 6819080, 10228620, 20457240]

約数ペア:

[(1, 20457240), (2, 10228620), (3, 6819080), (4, 5114310), (5, 4091448), (6, 3409540), (8, 2557155), (10, 2045724), (12, 1704770), (15, 1363816), (20, 1022862), (24, 852385), (30, 681908), (40, 511431), (60, 340954), (120, 170477), (227, 90120), (454, 45060), (681, 30040), (751, 27240), (908, 22530), (1135, 18024), (1362, 15020), (1502, 13620), (1816, 11265), (2253, 9080), (2270, 9012), (2724, 7510), (3004, 6810), (3405, 6008), (3755, 5448), (4506, 4540)]