20890408

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{3083}}^1$

素因数の和:3118

約数の個数: 48

約数和(自身を含む): 49220640

約数和(自身を除く): 28330232

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 121, 154, 242, 308, 484, 616, 847, 968, 1694, 3083, 3388, 6166, 6776, 12332, 21581, 24664, 33913, 43162, 67826, 86324, 135652, 172648, 237391, 271304, 373043, 474782, 746086, 949564, 1492172, 1899128, 2611301, 2984344, 5222602, 10445204, 20890408]

約数ペア:

[(1, 20890408), (2, 10445204), (4, 5222602), (7, 2984344), (8, 2611301), (11, 1899128), (14, 1492172), (22, 949564), (28, 746086), (44, 474782), (56, 373043), (77, 271304), (88, 237391), (121, 172648), (154, 135652), (242, 86324), (308, 67826), (484, 43162), (616, 33913), (847, 24664), (968, 21581), (1694, 12332), (3083, 6776), (3388, 6166)]