20578440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{769}}^1$

素因数の和:1006

約数の個数: 64

約数和(自身を含む): 62092800

約数和(自身を除く): 41514360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 223, 446, 669, 769, 892, 1115, 1338, 1538, 1784, 2230, 2307, 2676, 3076, 3345, 3845, 4460, 4614, 5352, 6152, 6690, 7690, 8920, 9228, 11535, 13380, 15380, 18456, 23070, 26760, 30760, 46140, 92280, 171487, 342974, 514461, 685948, 857435, 1028922, 1371896, 1714870, 2057844, 2572305, 3429740, 4115688, 5144610, 6859480, 10289220, 20578440]

約数ペア:

[(1, 20578440), (2, 10289220), (3, 6859480), (4, 5144610), (5, 4115688), (6, 3429740), (8, 2572305), (10, 2057844), (12, 1714870), (15, 1371896), (20, 1028922), (24, 857435), (30, 685948), (40, 514461), (60, 342974), (120, 171487), (223, 92280), (446, 46140), (669, 30760), (769, 26760), (892, 23070), (1115, 18456), (1338, 15380), (1538, 13380), (1784, 11535), (2230, 9228), (2307, 8920), (2676, 7690), (3076, 6690), (3345, 6152), (3845, 5352), (4460, 4614)]