21638154160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{139493}}^1$

素因数の和:139790

約数の個数: 80

約数和(自身を含む): 57703646016

約数和(自身を除く): 36065491856

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 277, 280, 554, 560, 1108, 1385, 1939, 2216, 2770, 3878, 4432, 5540, 7756, 9695, 11080, 15512, 19390, 22160, 31024, 38780, 77560, 139493, 155120, 278986, 557972, 697465, 976451, 1115944, 1394930, 1952902, 2231888, 2789860, 3905804, 4882255, 5579720, 7811608, 9764510, 11159440, 15623216, 19529020, 38639561, 39058040, 77279122, 78116080, 154558244, 193197805, 270476927, 309116488, 386395610, 540953854, 618232976, 772791220, 1081907708, 1352384635, 1545582440, 2163815416, 2704769270, 3091164880, 4327630832, 5409538540, 10819077080, 21638154160]

約数ペア:

[(1, 21638154160), (2, 10819077080), (4, 5409538540), (5, 4327630832), (7, 3091164880), (8, 2704769270), (10, 2163815416), (14, 1545582440), (16, 1352384635), (20, 1081907708), (28, 772791220), (35, 618232976), (40, 540953854), (56, 386395610), (70, 309116488), (80, 270476927), (112, 193197805), (140, 154558244), (277, 78116080), (280, 77279122), (554, 39058040), (560, 38639561), (1108, 19529020), (1385, 15623216), (1939, 11159440), (2216, 9764510), (2770, 7811608), (3878, 5579720), (4432, 4882255), (5540, 3905804), (7756, 2789860), (9695, 2231888), (11080, 1952902), (15512, 1394930), (19390, 1115944), (22160, 976451), (31024, 697465), (38780, 557972), (77560, 278986), (139493, 155120)]