18023020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1103}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 40803840

約数和(自身を除く): 22780820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1103, 1634, 2206, 3268, 4085, 4412, 5515, 8170, 11030, 16340, 20957, 22060, 41914, 47429, 83828, 94858, 104785, 189716, 209570, 237145, 419140, 474290, 901151, 948580, 1802302, 3604604, 4505755, 9011510, 18023020]

約数ペア:

[(1, 18023020), (2, 9011510), (4, 4505755), (5, 3604604), (10, 1802302), (19, 948580), (20, 901151), (38, 474290), (43, 419140), (76, 237145), (86, 209570), (95, 189716), (172, 104785), (190, 94858), (215, 83828), (380, 47429), (430, 41914), (817, 22060), (860, 20957), (1103, 16340), (1634, 11030), (2206, 8170), (3268, 5515), (4085, 4412)]