20278984

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2917}}^1$

素因数の和:3013

約数の個数: 32

約数和(自身を含む): 42019200

約数和(自身を除く): 21740216

約数列:

[1, 2, 4, 8, 11, 22, 44, 79, 88, 158, 316, 632, 869, 1738, 2917, 3476, 5834, 6952, 11668, 23336, 32087, 64174, 128348, 230443, 256696, 460886, 921772, 1843544, 2534873, 5069746, 10139492, 20278984]

約数ペア:

[(1, 20278984), (2, 10139492), (4, 5069746), (8, 2534873), (11, 1843544), (22, 921772), (44, 460886), (79, 256696), (88, 230443), (158, 128348), (316, 64174), (632, 32087), (869, 23336), (1738, 11668), (2917, 6952), (3476, 5834)]