747740

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{109}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 1848000

約数和(自身を除く): 1100260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 245, 343, 436, 490, 545, 686, 763, 980, 1090, 1372, 1526, 1715, 2180, 3052, 3430, 3815, 5341, 6860, 7630, 10682, 15260, 21364, 26705, 37387, 53410, 74774, 106820, 149548, 186935, 373870, 747740]

約数ペア:

[(1, 747740), (2, 373870), (4, 186935), (5, 149548), (7, 106820), (10, 74774), (14, 53410), (20, 37387), (28, 26705), (35, 21364), (49, 15260), (70, 10682), (98, 7630), (109, 6860), (140, 5341), (196, 3815), (218, 3430), (245, 3052), (343, 2180), (436, 1715), (490, 1526), (545, 1372), (686, 1090), (763, 980)]