1285757720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2472611}}^1$

素因数の和:2472635

約数の個数: 32

約数和(自身を含む): 3115491120

約数和(自身を除く): 1829733400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2472611, 4945222, 9890444, 12363055, 19780888, 24726110, 32143943, 49452220, 64287886, 98904440, 128575772, 160719715, 257151544, 321439430, 642878860, 1285757720]

約数ペア:

[(1, 1285757720), (2, 642878860), (4, 321439430), (5, 257151544), (8, 160719715), (10, 128575772), (13, 98904440), (20, 64287886), (26, 49452220), (40, 32143943), (52, 24726110), (65, 19780888), (104, 12363055), (130, 9890444), (260, 4945222), (520, 2472611)]