650780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2503}}^1$

素因数の和:2525

約数の個数: 24

約数和(自身を含む): 1472352

約数和(自身を除く): 821572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2503, 5006, 10012, 12515, 25030, 32539, 50060, 65078, 130156, 162695, 325390, 650780]

約数ペア:

[(1, 650780), (2, 325390), (4, 162695), (5, 130156), (10, 65078), (13, 50060), (20, 32539), (26, 25030), (52, 12515), (65, 10012), (130, 5006), (260, 2503)]