19541990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{150323}}^1$

素因数の和:150343

約数の個数: 16

約数和(自身を含む): 37881648

約数和(自身を除く): 18339658

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 150323, 300646, 751615, 1503230, 1954199, 3908398, 9770995, 19541990]

約数ペア:

[(1, 19541990), (2, 9770995), (5, 3908398), (10, 1954199), (13, 1503230), (26, 751615), (65, 300646), (130, 150323)]