21780924

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1051}}^1$

素因数の和:1226

約数の個数: 48

約数和(自身を含む): 55848576

約数和(自身を除く): 34067652

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 157, 314, 471, 628, 942, 1051, 1727, 1884, 2102, 3153, 3454, 4204, 5181, 6306, 6908, 10362, 11561, 12612, 20724, 23122, 34683, 46244, 69366, 138732, 165007, 330014, 495021, 660028, 990042, 1815077, 1980084, 3630154, 5445231, 7260308, 10890462, 21780924]

約数ペア:

[(1, 21780924), (2, 10890462), (3, 7260308), (4, 5445231), (6, 3630154), (11, 1980084), (12, 1815077), (22, 990042), (33, 660028), (44, 495021), (66, 330014), (132, 165007), (157, 138732), (314, 69366), (471, 46244), (628, 34683), (942, 23122), (1051, 20724), (1727, 12612), (1884, 11561), (2102, 10362), (3153, 6908), (3454, 6306), (4204, 5181)]