290467720

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{27611}}^1$

素因数の和:27885

約数の個数: 32

約数和(自身を含む): 656061120

約数和(自身を除く): 365593400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 27611, 55222, 110444, 138055, 220888, 276110, 552220, 1104440, 7261693, 14523386, 29046772, 36308465, 58093544, 72616930, 145233860, 290467720]

約数ペア:

[(1, 290467720), (2, 145233860), (4, 72616930), (5, 58093544), (8, 36308465), (10, 29046772), (20, 14523386), (40, 7261693), (263, 1104440), (526, 552220), (1052, 276110), (1315, 220888), (2104, 138055), (2630, 110444), (5260, 55222), (10520, 27611)]