20357920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:338

約数の個数: 96

約数和(自身を含む): 53887680

約数和(自身を除く): 33529760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 80, 86, 88, 110, 160, 172, 176, 215, 220, 269, 344, 352, 430, 440, 473, 538, 688, 860, 880, 946, 1076, 1345, 1376, 1720, 1760, 1892, 2152, 2365, 2690, 2959, 3440, 3784, 4304, 4730, 5380, 5918, 6880, 7568, 8608, 9460, 10760, 11567, 11836, 14795, 15136, 18920, 21520, 23134, 23672, 29590, 37840, 43040, 46268, 47344, 57835, 59180, 75680, 92536, 94688, 115670, 118360, 127237, 185072, 231340, 236720, 254474, 370144, 462680, 473440, 508948, 636185, 925360, 1017896, 1272370, 1850720, 2035792, 2544740, 4071584, 5089480, 10178960, 20357920]

約数ペア:

[(1, 20357920), (2, 10178960), (4, 5089480), (5, 4071584), (8, 2544740), (10, 2035792), (11, 1850720), (16, 1272370), (20, 1017896), (22, 925360), (32, 636185), (40, 508948), (43, 473440), (44, 462680), (55, 370144), (80, 254474), (86, 236720), (88, 231340), (110, 185072), (160, 127237), (172, 118360), (176, 115670), (215, 94688), (220, 92536), (269, 75680), (344, 59180), (352, 57835), (430, 47344), (440, 46268), (473, 43040), (538, 37840), (688, 29590), (860, 23672), (880, 23134), (946, 21520), (1076, 18920), (1345, 15136), (1376, 14795), (1720, 11836), (1760, 11567), (1892, 10760), (2152, 9460), (2365, 8608), (2690, 7568), (2959, 6880), (3440, 5918), (3784, 5380), (4304, 4730)]