1271990

素因数分解:

$2^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:727

約数の個数: 16

約数和(自身を含む): 2302560

約数和(自身を除く): 1030570

約数列:

[1, 2, 5, 10, 311, 409, 622, 818, 1555, 2045, 3110, 4090, 127199, 254398, 635995, 1271990]

約数ペア:

[(1, 1271990), (2, 635995), (5, 254398), (10, 127199), (311, 4090), (409, 3110), (622, 2045), (818, 1555)]