81564652

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{21487}}^1$

素因数の和:21577

約数の個数: 24

約数和(自身を含む): 155830976

約数和(自身を除く): 74266324

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 21487, 42974, 85948, 279331, 558662, 1117324, 1568551, 3137102, 6274204, 20391163, 40782326, 81564652]

約数ペア:

[(1, 81564652), (2, 40782326), (4, 20391163), (13, 6274204), (26, 3137102), (52, 1568551), (73, 1117324), (146, 558662), (292, 279331), (949, 85948), (1898, 42974), (3796, 21487)]