20610640

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4861}}^1$

素因数の和:4927

約数の個数: 40

約数和(自身を含む): 48833928

約数和(自身を除く): 28223288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4861, 9722, 19444, 24305, 38888, 48610, 77776, 97220, 194440, 257633, 388880, 515266, 1030532, 1288165, 2061064, 2576330, 4122128, 5152660, 10305320, 20610640]

約数ペア:

[(1, 20610640), (2, 10305320), (4, 5152660), (5, 4122128), (8, 2576330), (10, 2061064), (16, 1288165), (20, 1030532), (40, 515266), (53, 388880), (80, 257633), (106, 194440), (212, 97220), (265, 77776), (424, 48610), (530, 38888), (848, 24305), (1060, 19444), (2120, 9722), (4240, 4861)]