1991211790

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1520009}}^1$

素因数の和:1520147

約数の個数: 16

約数和(自身を含む): 3611543760

約数和(自身を除く): 1620331970

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 1520009, 3040018, 7600045, 15200090, 199121179, 398242358, 995605895, 1991211790]

約数ペア:

[(1, 1991211790), (2, 995605895), (5, 398242358), (10, 199121179), (131, 15200090), (262, 7600045), (655, 3040018), (1310, 1520009)]