718940

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{349}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 1528800

約数和(自身を除く): 809860

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 349, 412, 515, 698, 1030, 1396, 1745, 2060, 3490, 6980, 35947, 71894, 143788, 179735, 359470, 718940]

約数ペア:

[(1, 718940), (2, 359470), (4, 179735), (5, 143788), (10, 71894), (20, 35947), (103, 6980), (206, 3490), (349, 2060), (412, 1745), (515, 1396), (698, 1030)]