28112020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2551}}^1$

素因数の和:2608

約数の個数: 48

約数和(自身を含む): 64310400

約数和(自身を除く): 36198380

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 290, 380, 551, 580, 1102, 2204, 2551, 2755, 5102, 5510, 10204, 11020, 12755, 25510, 48469, 51020, 73979, 96938, 147958, 193876, 242345, 295916, 369895, 484690, 739790, 969380, 1405601, 1479580, 2811202, 5622404, 7028005, 14056010, 28112020]

約数ペア:

[(1, 28112020), (2, 14056010), (4, 7028005), (5, 5622404), (10, 2811202), (19, 1479580), (20, 1405601), (29, 969380), (38, 739790), (58, 484690), (76, 369895), (95, 295916), (116, 242345), (145, 193876), (190, 147958), (290, 96938), (380, 73979), (551, 51020), (580, 48469), (1102, 25510), (2204, 12755), (2551, 11020), (2755, 10204), (5102, 5510)]