217871140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{107857}}^1$

素因数の和:107967

約数の個数: 24

約数和(自身を含む): 462063672

約数和(自身を除く): 244192532

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 107857, 215714, 431428, 539285, 1078570, 2157140, 10893557, 21787114, 43574228, 54467785, 108935570, 217871140]

約数ペア:

[(1, 217871140), (2, 108935570), (4, 54467785), (5, 43574228), (10, 21787114), (20, 10893557), (101, 2157140), (202, 1078570), (404, 539285), (505, 431428), (1010, 215714), (2020, 107857)]