20185521280

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{883}}^1\times {\mathrm{1553}}^1$

素因数の和:2478

約数の個数: 128

約数和(自身を含む): 50443585920

約数和(自身を除く): 30258064640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 883, 920, 1472, 1553, 1766, 1840, 2944, 3106, 3532, 3680, 4415, 6212, 7064, 7360, 7765, 8830, 12424, 14128, 14720, 15530, 17660, 20309, 24848, 28256, 31060, 35320, 35719, 40618, 49696, 56512, 62120, 70640, 71438, 81236, 99392, 101545, 113024, 124240, 141280, 142876, 162472, 178595, 198784, 203090, 248480, 282560, 285752, 324944, 357190, 406180, 496960, 565120, 571504, 649888, 714380, 812360, 993920, 1143008, 1299776, 1371299, 1428760, 1624720, 2286016, 2599552, 2742598, 2857520, 3249440, 4572032, 5485196, 5715040, 6498880, 6856495, 10970392, 11430080, 12997760, 13712990, 21940784, 22860160, 27425980, 31539877, 43881568, 54851960, 63079754, 87763136, 109703920, 126159508, 157699385, 175526272, 219407840, 252319016, 315398770, 438815680, 504638032, 630797540, 877631360, 1009276064, 1261595080, 2018552128, 2523190160, 4037104256, 5046380320, 10092760640, 20185521280]

約数ペア:

[(1, 20185521280), (2, 10092760640), (4, 5046380320), (5, 4037104256), (8, 2523190160), (10, 2018552128), (16, 1261595080), (20, 1009276064), (23, 877631360), (32, 630797540), (40, 504638032), (46, 438815680), (64, 315398770), (80, 252319016), (92, 219407840), (115, 175526272), (128, 157699385), (160, 126159508), (184, 109703920), (230, 87763136), (320, 63079754), (368, 54851960), (460, 43881568), (640, 31539877), (736, 27425980), (883, 22860160), (920, 21940784), (1472, 13712990), (1553, 12997760), (1766, 11430080), (1840, 10970392), (2944, 6856495), (3106, 6498880), (3532, 5715040), (3680, 5485196), (4415, 4572032), (6212, 3249440), (7064, 2857520), (7360, 2742598), (7765, 2599552), (8830, 2286016), (12424, 1624720), (14128, 1428760), (14720, 1371299), (15530, 1299776), (17660, 1143008), (20309, 993920), (24848, 812360), (28256, 714380), (31060, 649888), (35320, 571504), (35719, 565120), (40618, 496960), (49696, 406180), (56512, 357190), (62120, 324944), (70640, 285752), (71438, 282560), (81236, 248480), (99392, 203090), (101545, 198784), (113024, 178595), (124240, 162472), (141280, 142876)]