81395278

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 131725440

約数和(自身を除く): 50330162

約数列:

[1, 2, 19, 38, 83, 131, 166, 197, 262, 394, 1577, 2489, 3154, 3743, 4978, 7486, 10873, 16351, 21746, 25807, 32702, 51614, 206587, 310669, 413174, 490333, 621338, 980666, 2141981, 4283962, 40697639, 81395278]

約数ペア:

[(1, 81395278), (2, 40697639), (19, 4283962), (38, 2141981), (83, 980666), (131, 621338), (166, 490333), (197, 413174), (262, 310669), (394, 206587), (1577, 51614), (2489, 32702), (3154, 25807), (3743, 21746), (4978, 16351), (7486, 10873)]