312120020

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1\times {\mathrm{571}}^1$

素因数の和:912

約数の個数: 48

約数和(自身を含む): 664599936

約数和(自身を除く): 352479916

約数列:

[1, 2, 4, 5, 10, 20, 151, 181, 302, 362, 571, 604, 724, 755, 905, 1142, 1510, 1810, 2284, 2855, 3020, 3620, 5710, 11420, 27331, 54662, 86221, 103351, 109324, 136655, 172442, 206702, 273310, 344884, 413404, 431105, 516755, 546620, 862210, 1033510, 1724420, 2067020, 15606001, 31212002, 62424004, 78030005, 156060010, 312120020]

約数ペア:

[(1, 312120020), (2, 156060010), (4, 78030005), (5, 62424004), (10, 31212002), (20, 15606001), (151, 2067020), (181, 1724420), (302, 1033510), (362, 862210), (571, 546620), (604, 516755), (724, 431105), (755, 413404), (905, 344884), (1142, 273310), (1510, 206702), (1810, 172442), (2284, 136655), (2855, 109324), (3020, 103351), (3620, 86221), (5710, 54662), (11420, 27331)]