18816590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2731}}^1$

素因数の和:2804

約数の個数: 32

約数和(自身を含む): 37177056

約数和(自身を除く): 18360466

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 2731, 3445, 5462, 6890, 13655, 27310, 35503, 71006, 144743, 177515, 289486, 355030, 723715, 1447430, 1881659, 3763318, 9408295, 18816590]

約数ペア:

[(1, 18816590), (2, 9408295), (5, 3763318), (10, 1881659), (13, 1447430), (26, 723715), (53, 355030), (65, 289486), (106, 177515), (130, 144743), (265, 71006), (530, 35503), (689, 27310), (1378, 13655), (2731, 6890), (3445, 5462)]