21318088

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1543}}^1$

素因数の和:1717

約数の個数: 32

約数和(自身を含む): 43911360

約数和(自身を除く): 22593272

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 157, 314, 628, 1256, 1543, 1727, 3086, 3454, 6172, 6908, 12344, 13816, 16973, 33946, 67892, 135784, 242251, 484502, 969004, 1938008, 2664761, 5329522, 10659044, 21318088]

約数ペア:

[(1, 21318088), (2, 10659044), (4, 5329522), (8, 2664761), (11, 1938008), (22, 969004), (44, 484502), (88, 242251), (157, 135784), (314, 67892), (628, 33946), (1256, 16973), (1543, 13816), (1727, 12344), (3086, 6908), (3454, 6172)]