689860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2029}}^1$

素因数の和:2055

約数の個数: 24

約数和(自身を含む): 1534680

約数和(自身を除く): 844820

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 2029, 4058, 8116, 10145, 20290, 34493, 40580, 68986, 137972, 172465, 344930, 689860]

約数ペア:

[(1, 689860), (2, 344930), (4, 172465), (5, 137972), (10, 68986), (17, 40580), (20, 34493), (34, 20290), (68, 10145), (85, 8116), (170, 4058), (340, 2029)]