320286280

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{51001}}^1$

素因数の和:51169

約数の個数: 32

約数和(自身を含む): 725248440

約数和(自身を除く): 404962160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 51001, 102002, 204004, 255005, 408008, 510010, 1020020, 2040040, 8007157, 16014314, 32028628, 40035785, 64057256, 80071570, 160143140, 320286280]

約数ペア:

[(1, 320286280), (2, 160143140), (4, 80071570), (5, 64057256), (8, 40035785), (10, 32028628), (20, 16014314), (40, 8007157), (157, 2040040), (314, 1020020), (628, 510010), (785, 408008), (1256, 255005), (1570, 204004), (3140, 102002), (6280, 51001)]