64385020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{65699}}^1$

素因数の和:65722

約数の個数: 36

約数和(自身を含む): 157285800

約数和(自身を除く): 92900780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 65699, 131398, 262796, 328495, 459893, 656990, 919786, 1313980, 1839572, 2299465, 3219251, 4598930, 6438502, 9197860, 12877004, 16096255, 32192510, 64385020]

約数ペア:

[(1, 64385020), (2, 32192510), (4, 16096255), (5, 12877004), (7, 9197860), (10, 6438502), (14, 4598930), (20, 3219251), (28, 2299465), (35, 1839572), (49, 1313980), (70, 919786), (98, 656990), (140, 459893), (196, 328495), (245, 262796), (490, 131398), (980, 65699)]