20639224

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 41997600

約数和(自身を除く): 21358376

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 113, 136, 158, 226, 289, 316, 452, 578, 632, 904, 1156, 1343, 1921, 2312, 2686, 3842, 5372, 7684, 8927, 10744, 15368, 17854, 22831, 32657, 35708, 45662, 65314, 71416, 91324, 130628, 151759, 182648, 261256, 303518, 607036, 1214072, 2579903, 5159806, 10319612, 20639224]

約数ペア:

[(1, 20639224), (2, 10319612), (4, 5159806), (8, 2579903), (17, 1214072), (34, 607036), (68, 303518), (79, 261256), (113, 182648), (136, 151759), (158, 130628), (226, 91324), (289, 71416), (316, 65314), (452, 45662), (578, 35708), (632, 32657), (904, 22831), (1156, 17854), (1343, 15368), (1921, 10744), (2312, 8927), (2686, 7684), (3842, 5372)]