16720904

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{353}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 32624640

約数和(自身を除く): 15903736

約数列:

[1, 2, 4, 8, 31, 62, 124, 191, 248, 353, 382, 706, 764, 1412, 1528, 2824, 5921, 10943, 11842, 21886, 23684, 43772, 47368, 67423, 87544, 134846, 269692, 539384, 2090113, 4180226, 8360452, 16720904]

約数ペア:

[(1, 16720904), (2, 8360452), (4, 4180226), (8, 2090113), (31, 539384), (62, 269692), (124, 134846), (191, 87544), (248, 67423), (353, 47368), (382, 43772), (706, 23684), (764, 21886), (1412, 11842), (1528, 10943), (2824, 5921)]