72871280

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{8513}}^1$

素因数の和:8633

約数の個数: 40

約数和(自身を含む): 171029232

約数和(自身を除く): 98157952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 4280, 8513, 8560, 17026, 34052, 42565, 68104, 85130, 136208, 170260, 340520, 681040, 910891, 1821782, 3643564, 4554455, 7287128, 9108910, 14574256, 18217820, 36435640, 72871280]

約数ペア:

[(1, 72871280), (2, 36435640), (4, 18217820), (5, 14574256), (8, 9108910), (10, 7287128), (16, 4554455), (20, 3643564), (40, 1821782), (80, 910891), (107, 681040), (214, 340520), (428, 170260), (535, 136208), (856, 85130), (1070, 68104), (1712, 42565), (2140, 34052), (4280, 17026), (8513, 8560)]