81806840

素因数分解:

$2^3\times 5^1\times {\mathrm{827}}^1\times {\mathrm{2473}}^1$

素因数の和:3311

約数の個数: 32

約数和(自身を含む): 184362480

約数和(自身を除く): 102555640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 827, 1654, 2473, 3308, 4135, 4946, 6616, 8270, 9892, 12365, 16540, 19784, 24730, 33080, 49460, 98920, 2045171, 4090342, 8180684, 10225855, 16361368, 20451710, 40903420, 81806840]

約数ペア:

[(1, 81806840), (2, 40903420), (4, 20451710), (5, 16361368), (8, 10225855), (10, 8180684), (20, 4090342), (40, 2045171), (827, 98920), (1654, 49460), (2473, 33080), (3308, 24730), (4135, 19784), (4946, 16540), (6616, 12365), (8270, 9892)]