21780858

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{631}}^1$

素因数の和:1170

約数の個数: 32

約数和(自身を含む): 47688192

約数和(自身を除く): 25907334

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 523, 631, 1046, 1262, 1569, 1893, 3138, 3786, 5753, 6941, 11506, 13882, 17259, 20823, 34518, 41646, 330013, 660026, 990039, 1980078, 3630143, 7260286, 10890429, 21780858]

約数ペア:

[(1, 21780858), (2, 10890429), (3, 7260286), (6, 3630143), (11, 1980078), (22, 990039), (33, 660026), (66, 330013), (523, 41646), (631, 34518), (1046, 20823), (1262, 17259), (1569, 13882), (1893, 11506), (3138, 6941), (3786, 5753)]