15864440

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{647}}^1$

素因数の和:1271

約数の個数: 32

約数和(自身を含む): 35808480

約数和(自身を除く): 19944040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 647, 1226, 1294, 2452, 2588, 3065, 3235, 4904, 5176, 6130, 6470, 12260, 12940, 24520, 25880, 396611, 793222, 1586444, 1983055, 3172888, 3966110, 7932220, 15864440]

約数ペア:

[(1, 15864440), (2, 7932220), (4, 3966110), (5, 3172888), (8, 1983055), (10, 1586444), (20, 793222), (40, 396611), (613, 25880), (647, 24520), (1226, 12940), (1294, 12260), (2452, 6470), (2588, 6130), (3065, 5176), (3235, 4904)]