81912205

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 108307584

約数和(自身を除く): 26395379

約数列:

[1, 5, 17, 43, 73, 85, 215, 307, 365, 731, 1241, 1535, 3139, 3655, 5219, 6205, 13201, 15695, 22411, 26095, 53363, 66005, 112055, 224417, 266815, 380987, 963673, 1122085, 1904935, 4818365, 16382441, 81912205]

約数ペア:

[(1, 81912205), (5, 16382441), (17, 4818365), (43, 1904935), (73, 1122085), (85, 963673), (215, 380987), (307, 266815), (365, 224417), (731, 112055), (1241, 66005), (1535, 53363), (3139, 26095), (3655, 22411), (5219, 15695), (6205, 13201)]