20578690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{6451}}^1$

素因数の和:6498

約数の個数: 32

約数和(自身を含む): 41808960

約数和(自身を除く): 21230270

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 290, 319, 638, 1595, 3190, 6451, 12902, 32255, 64510, 70961, 141922, 187079, 354805, 374158, 709610, 935395, 1870790, 2057869, 4115738, 10289345, 20578690]

約数ペア:

[(1, 20578690), (2, 10289345), (5, 4115738), (10, 2057869), (11, 1870790), (22, 935395), (29, 709610), (55, 374158), (58, 354805), (110, 187079), (145, 141922), (290, 70961), (319, 64510), (638, 32255), (1595, 12902), (3190, 6451)]