138528440

素因数分解:

$2^3\times 5^1\times {\mathrm{881}}^1\times {\mathrm{3931}}^1$

素因数の和:4823

約数の個数: 32

約数和(自身を含む): 312122160

約数和(自身を除く): 173593720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 881, 1762, 3524, 3931, 4405, 7048, 7862, 8810, 15724, 17620, 19655, 31448, 35240, 39310, 78620, 157240, 3463211, 6926422, 13852844, 17316055, 27705688, 34632110, 69264220, 138528440]

約数ペア:

[(1, 138528440), (2, 69264220), (4, 34632110), (5, 27705688), (8, 17316055), (10, 13852844), (20, 6926422), (40, 3463211), (881, 157240), (1762, 78620), (3524, 39310), (3931, 35240), (4405, 31448), (7048, 19655), (7862, 17620), (8810, 15724)]