81321418

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{3853}}^1$

素因数の和:4089

約数の個数: 16

約数和(自身を含む): 124730856

約数和(自身を除く): 43409438

約数列:

[1, 2, 61, 122, 173, 346, 3853, 7706, 10553, 21106, 235033, 470066, 666569, 1333138, 40660709, 81321418]

約数ペア:

[(1, 81321418), (2, 40660709), (61, 1333138), (122, 666569), (173, 470066), (346, 235033), (3853, 21106), (7706, 10553)]