649990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 1347840

約数和(自身を除く): 697850

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 311, 418, 622, 1045, 1555, 2090, 3110, 3421, 5909, 6842, 11818, 17105, 29545, 34210, 59090, 64999, 129998, 324995, 649990]

約数ペア:

[(1, 649990), (2, 324995), (5, 129998), (10, 64999), (11, 59090), (19, 34210), (22, 29545), (38, 17105), (55, 11818), (95, 6842), (110, 5909), (190, 3421), (209, 3110), (311, 2090), (418, 1555), (622, 1045)]