20802180020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1259}}^1\times {\mathrm{43481}}^1$

素因数の和:44768

約数の個数: 48

約数和(自身を含む): 46021348800

約数和(自身を除く): 25219168780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1259, 2518, 5036, 6295, 12590, 23921, 25180, 43481, 47842, 86962, 95684, 119605, 173924, 217405, 239210, 434810, 478420, 826139, 869620, 1652278, 3304556, 4130695, 8261390, 16522780, 54742579, 109485158, 218970316, 273712895, 547425790, 1040109001, 1094851580, 2080218002, 4160436004, 5200545005, 10401090010, 20802180020]

約数ペア:

[(1, 20802180020), (2, 10401090010), (4, 5200545005), (5, 4160436004), (10, 2080218002), (19, 1094851580), (20, 1040109001), (38, 547425790), (76, 273712895), (95, 218970316), (190, 109485158), (380, 54742579), (1259, 16522780), (2518, 8261390), (5036, 4130695), (6295, 3304556), (12590, 1652278), (23921, 869620), (25180, 826139), (43481, 478420), (47842, 434810), (86962, 239210), (95684, 217405), (119605, 173924)]