12565880

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{991}}^1$

素因数の和:1319

約数の個数: 32

約数和(自身を含む): 28391040

約数和(自身を除く): 15825160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 991, 1268, 1585, 1982, 2536, 3170, 3964, 4955, 6340, 7928, 9910, 12680, 19820, 39640, 314147, 628294, 1256588, 1570735, 2513176, 3141470, 6282940, 12565880]

約数ペア:

[(1, 12565880), (2, 6282940), (4, 3141470), (5, 2513176), (8, 1570735), (10, 1256588), (20, 628294), (40, 314147), (317, 39640), (634, 19820), (991, 12680), (1268, 9910), (1585, 7928), (1982, 6340), (2536, 4955), (3170, 3964)]