81445320

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:316

約数の個数: 192

約数和(自身を含む): 292818240

約数和(自身を除く): 211372920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 131, 132, 157, 165, 180, 198, 220, 262, 264, 314, 330, 360, 393, 396, 440, 471, 495, 524, 628, 655, 660, 785, 786, 792, 942, 990, 1048, 1179, 1256, 1310, 1320, 1413, 1441, 1570, 1572, 1727, 1884, 1965, 1980, 2355, 2358, 2620, 2826, 2882, 3140, 3144, 3454, 3768, 3930, 3960, 4323, 4710, 4716, 5181, 5240, 5652, 5764, 5895, 6280, 6908, 7065, 7205, 7860, 8635, 8646, 9420, 9432, 10362, 11304, 11528, 11790, 12969, 13816, 14130, 14410, 15543, 15720, 17270, 17292, 18840, 20567, 20724, 21615, 23580, 25905, 25938, 28260, 28820, 31086, 34540, 34584, 41134, 41448, 43230, 47160, 51810, 51876, 56520, 57640, 61701, 62172, 64845, 69080, 77715, 82268, 86460, 102835, 103620, 103752, 123402, 124344, 129690, 155430, 164536, 172920, 185103, 205670, 207240, 226237, 246804, 259380, 308505, 310860, 370206, 411340, 452474, 493608, 518760, 617010, 621720, 678711, 740412, 822680, 904948, 925515, 1131185, 1234020, 1357422, 1480824, 1809896, 1851030, 2036133, 2262370, 2468040, 2714844, 3393555, 3702060, 4072266, 4524740, 5429688, 6787110, 7404120, 8144532, 9049480, 10180665, 13574220, 16289064, 20361330, 27148440, 40722660, 81445320]

約数ペア:

[(1, 81445320), (2, 40722660), (3, 27148440), (4, 20361330), (5, 16289064), (6, 13574220), (8, 10180665), (9, 9049480), (10, 8144532), (11, 7404120), (12, 6787110), (15, 5429688), (18, 4524740), (20, 4072266), (22, 3702060), (24, 3393555), (30, 2714844), (33, 2468040), (36, 2262370), (40, 2036133), (44, 1851030), (45, 1809896), (55, 1480824), (60, 1357422), (66, 1234020), (72, 1131185), (88, 925515), (90, 904948), (99, 822680), (110, 740412), (120, 678711), (131, 621720), (132, 617010), (157, 518760), (165, 493608), (180, 452474), (198, 411340), (220, 370206), (262, 310860), (264, 308505), (314, 259380), (330, 246804), (360, 226237), (393, 207240), (396, 205670), (440, 185103), (471, 172920), (495, 164536), (524, 155430), (628, 129690), (655, 124344), (660, 123402), (785, 103752), (786, 103620), (792, 102835), (942, 86460), (990, 82268), (1048, 77715), (1179, 69080), (1256, 64845), (1310, 62172), (1320, 61701), (1413, 57640), (1441, 56520), (1570, 51876), (1572, 51810), (1727, 47160), (1884, 43230), (1965, 41448), (1980, 41134), (2355, 34584), (2358, 34540), (2620, 31086), (2826, 28820), (2882, 28260), (3140, 25938), (3144, 25905), (3454, 23580), (3768, 21615), (3930, 20724), (3960, 20567), (4323, 18840), (4710, 17292), (4716, 17270), (5181, 15720), (5240, 15543), (5652, 14410), (5764, 14130), (5895, 13816), (6280, 12969), (6908, 11790), (7065, 11528), (7205, 11304), (7860, 10362), (8635, 9432), (8646, 9420)]