81842840

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{11827}}^1$

素因数の和:12011

約数の個数: 32

約数和(自身を含む): 185226480

約数和(自身を除く): 103383640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 11827, 23654, 47308, 59135, 94616, 118270, 236540, 473080, 2046071, 4092142, 8184284, 10230355, 16368568, 20460710, 40921420, 81842840]

約数ペア:

[(1, 81842840), (2, 40921420), (4, 20460710), (5, 16368568), (8, 10230355), (10, 8184284), (20, 4092142), (40, 2046071), (173, 473080), (346, 236540), (692, 118270), (865, 94616), (1384, 59135), (1730, 47308), (3460, 23654), (6920, 11827)]