18740745

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{953}}^1$

素因数の和:1006

約数の個数: 48

約数和(自身を含む): 35717760

約数和(自身を除く): 16977015

約数列:

[1, 3, 5, 9, 15, 19, 23, 45, 57, 69, 95, 115, 171, 207, 285, 345, 437, 855, 953, 1035, 1311, 2185, 2859, 3933, 4765, 6555, 8577, 14295, 18107, 19665, 21919, 42885, 54321, 65757, 90535, 109595, 162963, 197271, 271605, 328785, 416461, 814815, 986355, 1249383, 2082305, 3748149, 6246915, 18740745]

約数ペア:

[(1, 18740745), (3, 6246915), (5, 3748149), (9, 2082305), (15, 1249383), (19, 986355), (23, 814815), (45, 416461), (57, 328785), (69, 271605), (95, 197271), (115, 162963), (171, 109595), (207, 90535), (285, 65757), (345, 54321), (437, 42885), (855, 21919), (953, 19665), (1035, 18107), (1311, 14295), (2185, 8577), (2859, 6555), (3933, 4765)]