20123013580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{806857}}^1$

素因数の和:806938

約数の個数: 48

約数和(自身を含む): 44732207520

約数和(自身を除く): 24609193940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 1247, 2494, 4988, 6235, 12470, 24940, 806857, 1613714, 3227428, 4034285, 8068570, 16137140, 23398853, 34694851, 46797706, 69389702, 93595412, 116994265, 138779404, 173474255, 233988530, 346948510, 467977060, 693897020, 1006150679, 2012301358, 4024602716, 5030753395, 10061506790, 20123013580]

約数ペア:

[(1, 20123013580), (2, 10061506790), (4, 5030753395), (5, 4024602716), (10, 2012301358), (20, 1006150679), (29, 693897020), (43, 467977060), (58, 346948510), (86, 233988530), (116, 173474255), (145, 138779404), (172, 116994265), (215, 93595412), (290, 69389702), (430, 46797706), (580, 34694851), (860, 23398853), (1247, 16137140), (2494, 8068570), (4988, 4034285), (6235, 3227428), (12470, 1613714), (24940, 806857)]