991780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2917}}^1$

素因数の和:2943

約数の個数: 24

約数和(自身を含む): 2206008

約数和(自身を除く): 1214228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 2917, 5834, 11668, 14585, 29170, 49589, 58340, 99178, 198356, 247945, 495890, 991780]

約数ペア:

[(1, 991780), (2, 495890), (4, 247945), (5, 198356), (10, 99178), (17, 58340), (20, 49589), (34, 29170), (68, 14585), (85, 11668), (170, 5834), (340, 2917)]