20879655

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2213}}^1$

素因数の和:2275

約数の個数: 32

約数和(自身を含む): 36345024

約数和(自身を除く): 15465369

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2213, 3145, 6639, 9435, 11065, 33195, 37621, 81881, 112863, 188105, 245643, 409405, 564315, 1228215, 1391977, 4175931, 6959885, 20879655]

約数ペア:

[(1, 20879655), (3, 6959885), (5, 4175931), (15, 1391977), (17, 1228215), (37, 564315), (51, 409405), (85, 245643), (111, 188105), (185, 112863), (255, 81881), (555, 37621), (629, 33195), (1887, 11065), (2213, 9435), (3145, 6639)]