81221664208

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{267176527}}^1$

素因数の和:267176554

約数の個数: 20

約数和(自身を含む): 165649447360

約数和(自身を除く): 84427783152

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 267176527, 534353054, 1068706108, 2137412216, 4274824432, 5076354013, 10152708026, 20305416052, 40610832104, 81221664208]

約数ペア:

[(1, 81221664208), (2, 40610832104), (4, 20305416052), (8, 10152708026), (16, 5076354013), (19, 4274824432), (38, 2137412216), (76, 1068706108), (152, 534353054), (304, 267176527)]