81569480

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{12211}}^1$

素因数の和:12389

約数の個数: 32

約数和(自身を含む): 184645440

約数和(自身を除く): 103075960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 12211, 24422, 48844, 61055, 97688, 122110, 244220, 488440, 2039237, 4078474, 8156948, 10196185, 16313896, 20392370, 40784740, 81569480]

約数ペア:

[(1, 81569480), (2, 40784740), (4, 20392370), (5, 16313896), (8, 10196185), (10, 8156948), (20, 4078474), (40, 2039237), (167, 488440), (334, 244220), (668, 122110), (835, 97688), (1336, 61055), (1670, 48844), (3340, 24422), (6680, 12211)]