20711745

素因数分解:

$3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3089}}^1$

素因数の和:3249

約数の個数: 24

約数和(自身を含む): 36153000

約数和(自身を除く): 15441255

約数列:

[1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235, 3089, 6705, 9267, 15445, 27801, 46335, 139005, 460261, 1380783, 2301305, 4142349, 6903915, 20711745]

約数ペア:

[(1, 20711745), (3, 6903915), (5, 4142349), (9, 2301305), (15, 1380783), (45, 460261), (149, 139005), (447, 46335), (745, 27801), (1341, 15445), (2235, 9267), (3089, 6705)]