18256640

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:877

約数の個数: 72

約数和(自身を含む): 46357920

約数和(自身を除く): 28101280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 839, 1088, 1280, 1360, 1678, 2176, 2720, 3356, 4195, 4352, 5440, 6712, 8390, 10880, 13424, 14263, 16780, 21760, 26848, 28526, 33560, 53696, 57052, 67120, 71315, 107392, 114104, 134240, 142630, 214784, 228208, 268480, 285260, 456416, 536960, 570520, 912832, 1073920, 1141040, 1825664, 2282080, 3651328, 4564160, 9128320, 18256640]

約数ペア:

[(1, 18256640), (2, 9128320), (4, 4564160), (5, 3651328), (8, 2282080), (10, 1825664), (16, 1141040), (17, 1073920), (20, 912832), (32, 570520), (34, 536960), (40, 456416), (64, 285260), (68, 268480), (80, 228208), (85, 214784), (128, 142630), (136, 134240), (160, 114104), (170, 107392), (256, 71315), (272, 67120), (320, 57052), (340, 53696), (544, 33560), (640, 28526), (680, 26848), (839, 21760), (1088, 16780), (1280, 14263), (1360, 13424), (1678, 10880), (2176, 8390), (2720, 6712), (3356, 5440), (4195, 4352)]