21071260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2551}}^1$

素因数の和:2626

約数の個数: 48

約数和(自身を含む): 51448320

約数和(自身を除く): 30377060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2551, 4130, 5102, 8260, 10204, 12755, 17857, 25510, 35714, 51020, 71428, 89285, 150509, 178570, 301018, 357140, 602036, 752545, 1053563, 1505090, 2107126, 3010180, 4214252, 5267815, 10535630, 21071260]

約数ペア:

[(1, 21071260), (2, 10535630), (4, 5267815), (5, 4214252), (7, 3010180), (10, 2107126), (14, 1505090), (20, 1053563), (28, 752545), (35, 602036), (59, 357140), (70, 301018), (118, 178570), (140, 150509), (236, 89285), (295, 71428), (413, 51020), (590, 35714), (826, 25510), (1180, 17857), (1652, 12755), (2065, 10204), (2551, 8260), (4130, 5102)]