81574563

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{11807}}^1$

素因数の和:11871

約数の個数: 24

約数和(自身を含む): 129226752

約数和(自身を除く): 47652189

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 6909, 11807, 35421, 82649, 247947, 554929, 578543, 1664787, 1735629, 3884503, 11653509, 27191521, 81574563]

約数ペア:

[(1, 81574563), (3, 27191521), (7, 11653509), (21, 3884503), (47, 1735629), (49, 1664787), (141, 578543), (147, 554929), (329, 247947), (987, 82649), (2303, 35421), (6909, 11807)]