18921213

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1091}}^1$

素因数の和:1185

約数の個数: 24

約数和(自身を含む): 28619136

約数和(自身を除く): 9697923

約数列:

[1, 3, 9, 41, 47, 123, 141, 369, 423, 1091, 1927, 3273, 5781, 9819, 17343, 44731, 51277, 134193, 153831, 402579, 461493, 2102357, 6307071, 18921213]

約数ペア:

[(1, 18921213), (3, 6307071), (9, 2102357), (41, 461493), (47, 402579), (123, 153831), (141, 134193), (369, 51277), (423, 44731), (1091, 17343), (1927, 9819), (3273, 5781)]