20417020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4133}}^1$

素因数の和:4174

約数の個数: 48

約数和(自身を含む): 48615840

約数和(自身を除く): 28198820

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4133, 4940, 8266, 16532, 20665, 41330, 53729, 78527, 82660, 107458, 157054, 214916, 268645, 314108, 392635, 537290, 785270, 1020851, 1074580, 1570540, 2041702, 4083404, 5104255, 10208510, 20417020]

約数ペア:

[(1, 20417020), (2, 10208510), (4, 5104255), (5, 4083404), (10, 2041702), (13, 1570540), (19, 1074580), (20, 1020851), (26, 785270), (38, 537290), (52, 392635), (65, 314108), (76, 268645), (95, 214916), (130, 157054), (190, 107458), (247, 82660), (260, 78527), (380, 53729), (494, 41330), (988, 20665), (1235, 16532), (2470, 8266), (4133, 4940)]