991301890

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{756719}}^1$

素因数の和:756857

約数の個数: 16

約数和(自身を含む): 1797966720

約数和(自身を除く): 806664830

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 756719, 1513438, 3783595, 7567190, 99130189, 198260378, 495650945, 991301890]

約数ペア:

[(1, 991301890), (2, 495650945), (5, 198260378), (10, 99130189), (131, 7567190), (262, 3783595), (655, 1513438), (1310, 756719)]