840782890

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{641819}}^1$

素因数の和:641957

約数の個数: 16

約数和(自身を含む): 1524964320

約数和(自身を除く): 684181430

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 641819, 1283638, 3209095, 6418190, 84078289, 168156578, 420391445, 840782890]

約数ペア:

[(1, 840782890), (2, 420391445), (5, 168156578), (10, 84078289), (131, 6418190), (262, 3209095), (655, 1283638), (1310, 641819)]