201491780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{21481}}^1$

素因数の和:21564

約数の個数: 48

約数和(自身を含む): 490820736

約数和(自身を除く): 289328956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 4690, 9380, 21481, 42962, 85924, 107405, 150367, 214810, 300734, 429620, 601468, 751835, 1439227, 1503670, 2878454, 3007340, 5756908, 7196135, 10074589, 14392270, 20149178, 28784540, 40298356, 50372945, 100745890, 201491780]

約数ペア:

[(1, 201491780), (2, 100745890), (4, 50372945), (5, 40298356), (7, 28784540), (10, 20149178), (14, 14392270), (20, 10074589), (28, 7196135), (35, 5756908), (67, 3007340), (70, 2878454), (134, 1503670), (140, 1439227), (268, 751835), (335, 601468), (469, 429620), (670, 300734), (938, 214810), (1340, 150367), (1876, 107405), (2345, 85924), (4690, 42962), (9380, 21481)]