21278417920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{181}}^1\times {\mathrm{22961}}^1$

素因数の和:23167

約数の個数: 88

約数和(自身を含む): 51327509688

約数和(自身を除く): 30049091768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 181, 256, 320, 362, 512, 640, 724, 905, 1024, 1280, 1448, 1810, 2560, 2896, 3620, 5120, 5792, 7240, 11584, 14480, 22961, 23168, 28960, 45922, 46336, 57920, 91844, 92672, 114805, 115840, 183688, 185344, 229610, 231680, 367376, 459220, 463360, 734752, 918440, 926720, 1469504, 1836880, 2939008, 3673760, 4155941, 5878016, 7347520, 8311882, 11756032, 14695040, 16623764, 20779705, 23512064, 29390080, 33247528, 41559410, 58780160, 66495056, 83118820, 117560320, 132990112, 166237640, 265980224, 332475280, 531960448, 664950560, 1063920896, 1329901120, 2127841792, 2659802240, 4255683584, 5319604480, 10639208960, 21278417920]

約数ペア:

[(1, 21278417920), (2, 10639208960), (4, 5319604480), (5, 4255683584), (8, 2659802240), (10, 2127841792), (16, 1329901120), (20, 1063920896), (32, 664950560), (40, 531960448), (64, 332475280), (80, 265980224), (128, 166237640), (160, 132990112), (181, 117560320), (256, 83118820), (320, 66495056), (362, 58780160), (512, 41559410), (640, 33247528), (724, 29390080), (905, 23512064), (1024, 20779705), (1280, 16623764), (1448, 14695040), (1810, 11756032), (2560, 8311882), (2896, 7347520), (3620, 5878016), (5120, 4155941), (5792, 3673760), (7240, 2939008), (11584, 1836880), (14480, 1469504), (22961, 926720), (23168, 918440), (28960, 734752), (45922, 463360), (46336, 459220), (57920, 367376), (91844, 231680), (92672, 229610), (114805, 185344), (115840, 183688)]