20788360

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17921}}^1$

素因数の和:17961

約数の個数: 32

約数和(自身を含む): 48389400

約数和(自身を除く): 27601040

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17921, 35842, 71684, 89605, 143368, 179210, 358420, 519709, 716840, 1039418, 2078836, 2598545, 4157672, 5197090, 10394180, 20788360]

約数ペア:

[(1, 20788360), (2, 10394180), (4, 5197090), (5, 4157672), (8, 2598545), (10, 2078836), (20, 1039418), (29, 716840), (40, 519709), (58, 358420), (116, 179210), (145, 143368), (232, 89605), (290, 71684), (580, 35842), (1160, 17921)]