21090135380

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{691}}^1\times {\mathrm{22777}}^1$

素因数の和:23544

約数の個数: 48

約数和(自身を含む): 45017345856

約数和(自身を除く): 23927210476

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 691, 1340, 1382, 2764, 3455, 6910, 13820, 22777, 45554, 46297, 91108, 92594, 113885, 185188, 227770, 231485, 455540, 462970, 925940, 1526059, 3052118, 6104236, 7630295, 15260590, 15738907, 30521180, 31477814, 62955628, 78694535, 157389070, 314778140, 1054506769, 2109013538, 4218027076, 5272533845, 10545067690, 21090135380]

約数ペア:

[(1, 21090135380), (2, 10545067690), (4, 5272533845), (5, 4218027076), (10, 2109013538), (20, 1054506769), (67, 314778140), (134, 157389070), (268, 78694535), (335, 62955628), (670, 31477814), (691, 30521180), (1340, 15738907), (1382, 15260590), (2764, 7630295), (3455, 6104236), (6910, 3052118), (13820, 1526059), (22777, 925940), (45554, 462970), (46297, 455540), (91108, 231485), (92594, 227770), (113885, 185188)]