20563790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{499}}^1$

素因数の和:836

約数の個数: 32

約数和(自身を含む): 40068000

約数和(自身を除く): 19504210

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 317, 499, 634, 998, 1585, 2495, 3170, 4121, 4990, 6487, 8242, 12974, 20605, 32435, 41210, 64870, 158183, 316366, 790915, 1581830, 2056379, 4112758, 10281895, 20563790]

約数ペア:

[(1, 20563790), (2, 10281895), (5, 4112758), (10, 2056379), (13, 1581830), (26, 790915), (65, 316366), (130, 158183), (317, 64870), (499, 41210), (634, 32435), (998, 20605), (1585, 12974), (2495, 8242), (3170, 6487), (4121, 4990)]