18513020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{541}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 40975200

約数和(自身を除く): 22462180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 59, 116, 118, 145, 236, 290, 295, 541, 580, 590, 1082, 1180, 1711, 2164, 2705, 3422, 5410, 6844, 8555, 10820, 15689, 17110, 31378, 31919, 34220, 62756, 63838, 78445, 127676, 156890, 159595, 313780, 319190, 638380, 925651, 1851302, 3702604, 4628255, 9256510, 18513020]

約数ペア:

[(1, 18513020), (2, 9256510), (4, 4628255), (5, 3702604), (10, 1851302), (20, 925651), (29, 638380), (58, 319190), (59, 313780), (116, 159595), (118, 156890), (145, 127676), (236, 78445), (290, 63838), (295, 62756), (541, 34220), (580, 31919), (590, 31378), (1082, 17110), (1180, 15689), (1711, 10820), (2164, 8555), (2705, 6844), (3422, 5410)]