31301720

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{2549}}^1$

素因数の和:2867

約数の個数: 32

約数和(自身を含む): 70686000

約数和(自身を除く): 39384280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 2549, 3070, 5098, 6140, 10196, 12280, 12745, 20392, 25490, 50980, 101960, 782543, 1565086, 3130172, 3912715, 6260344, 7825430, 15650860, 31301720]

約数ペア:

[(1, 31301720), (2, 15650860), (4, 7825430), (5, 6260344), (8, 3912715), (10, 3130172), (20, 1565086), (40, 782543), (307, 101960), (614, 50980), (1228, 25490), (1535, 20392), (2456, 12745), (2549, 12280), (3070, 10196), (5098, 6140)]