1990332010

素因数分解:

$2^1\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{154409}}^1$

素因数の和:155705

約数の個数: 16

約数和(自身を含む): 3585400200

約数和(自身を除く): 1595068190

約数列:

[1, 2, 5, 10, 1289, 2578, 6445, 12890, 154409, 308818, 772045, 1544090, 199033201, 398066402, 995166005, 1990332010]

約数ペア:

[(1, 1990332010), (2, 995166005), (5, 398066402), (10, 199033201), (1289, 1544090), (2578, 772045), (6445, 308818), (12890, 154409)]