81428965

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 104104440

約数和(自身を除く): 22675475

約数列:

[1, 5, 19, 95, 197, 229, 361, 985, 1145, 1805, 3743, 4351, 18715, 21755, 45113, 71117, 82669, 225565, 355585, 413345, 857147, 4285735, 16285793, 81428965]

約数ペア:

[(1, 81428965), (5, 16285793), (19, 4285735), (95, 857147), (197, 413345), (229, 355585), (361, 225565), (985, 82669), (1145, 71117), (1805, 45113), (3743, 21755), (4351, 18715)]