317140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 676872

約数和(自身を除く): 359732

約数列:

[1, 2, 4, 5, 10, 20, 101, 157, 202, 314, 404, 505, 628, 785, 1010, 1570, 2020, 3140, 15857, 31714, 63428, 79285, 158570, 317140]

約数ペア:

[(1, 317140), (2, 158570), (4, 79285), (5, 63428), (10, 31714), (20, 15857), (101, 3140), (157, 2020), (202, 1570), (314, 1010), (404, 785), (505, 628)]