20521655

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{353}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 30993408

約数和(自身を除く): 10471753

約数列:

[1, 5, 7, 11, 35, 55, 77, 151, 353, 385, 755, 1057, 1661, 1765, 2471, 3883, 5285, 8305, 11627, 12355, 19415, 27181, 53303, 58135, 135905, 266515, 373121, 586333, 1865605, 2931665, 4104331, 20521655]

約数ペア:

[(1, 20521655), (5, 4104331), (7, 2931665), (11, 1865605), (35, 586333), (55, 373121), (77, 266515), (151, 135905), (353, 58135), (385, 53303), (755, 27181), (1057, 19415), (1661, 12355), (1765, 11627), (2471, 8305), (3883, 5285)]