281220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 813120

約数和(自身を除く): 531900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 109, 129, 172, 215, 218, 258, 327, 430, 436, 516, 545, 645, 654, 860, 1090, 1290, 1308, 1635, 2180, 2580, 3270, 4687, 6540, 9374, 14061, 18748, 23435, 28122, 46870, 56244, 70305, 93740, 140610, 281220]

約数ペア:

[(1, 281220), (2, 140610), (3, 93740), (4, 70305), (5, 56244), (6, 46870), (10, 28122), (12, 23435), (15, 18748), (20, 14061), (30, 9374), (43, 6540), (60, 4687), (86, 3270), (109, 2580), (129, 2180), (172, 1635), (215, 1308), (218, 1290), (258, 1090), (327, 860), (430, 654), (436, 645), (516, 545)]