251281520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{15473}}^1$

素因数の和:15522

約数の個数: 80

約数和(自身を含む): 690759360

約数和(自身を除く): 439477840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 812, 1015, 1160, 1624, 2030, 2320, 3248, 4060, 8120, 15473, 16240, 30946, 61892, 77365, 108311, 123784, 154730, 216622, 247568, 309460, 433244, 448717, 541555, 618920, 866488, 897434, 1083110, 1237840, 1732976, 1794868, 2166220, 2243585, 3141019, 3589736, 4332440, 4487170, 6282038, 7179472, 8664880, 8974340, 12564076, 15705095, 17948680, 25128152, 31410190, 35897360, 50256304, 62820380, 125640760, 251281520]

約数ペア:

[(1, 251281520), (2, 125640760), (4, 62820380), (5, 50256304), (7, 35897360), (8, 31410190), (10, 25128152), (14, 17948680), (16, 15705095), (20, 12564076), (28, 8974340), (29, 8664880), (35, 7179472), (40, 6282038), (56, 4487170), (58, 4332440), (70, 3589736), (80, 3141019), (112, 2243585), (116, 2166220), (140, 1794868), (145, 1732976), (203, 1237840), (232, 1083110), (280, 897434), (290, 866488), (406, 618920), (464, 541555), (560, 448717), (580, 433244), (812, 309460), (1015, 247568), (1160, 216622), (1624, 154730), (2030, 123784), (2320, 108311), (3248, 77365), (4060, 61892), (8120, 30946), (15473, 16240)]