21601195

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2953}}^1$

素因数の和:2995

約数の個数: 32

約数和(自身を含む): 34030080

約数和(自身を除く): 12428885

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2953, 7315, 14765, 20671, 32483, 56107, 103355, 162415, 227381, 280535, 392749, 617177, 1136905, 1963745, 3085885, 4320239, 21601195]

約数ペア:

[(1, 21601195), (5, 4320239), (7, 3085885), (11, 1963745), (19, 1136905), (35, 617177), (55, 392749), (77, 280535), (95, 227381), (133, 162415), (209, 103355), (385, 56107), (665, 32483), (1045, 20671), (1463, 14765), (2953, 7315)]