19178860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{769}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 42688800

約数和(自身を除く): 23509940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 769, 860, 1247, 1538, 2494, 3076, 3845, 4988, 6235, 7690, 12470, 15380, 22301, 24940, 33067, 44602, 66134, 89204, 111505, 132268, 165335, 223010, 330670, 446020, 661340, 958943, 1917886, 3835772, 4794715, 9589430, 19178860]

約数ペア:

[(1, 19178860), (2, 9589430), (4, 4794715), (5, 3835772), (10, 1917886), (20, 958943), (29, 661340), (43, 446020), (58, 330670), (86, 223010), (116, 165335), (145, 132268), (172, 111505), (215, 89204), (290, 66134), (430, 44602), (580, 33067), (769, 24940), (860, 22301), (1247, 15380), (1538, 12470), (2494, 7690), (3076, 6235), (3845, 4988)]