18850780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72503}}^1$

素因数の和:72525

約数の個数: 24

約数和(自身を含む): 42632352

約数和(自身を除く): 23781572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72503, 145006, 290012, 362515, 725030, 942539, 1450060, 1885078, 3770156, 4712695, 9425390, 18850780]

約数ペア:

[(1, 18850780), (2, 9425390), (4, 4712695), (5, 3770156), (10, 1885078), (13, 1450060), (20, 942539), (26, 725030), (52, 362515), (65, 290012), (130, 145006), (260, 72503)]