21507816848

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{9337}}^1$

素因数の和:9640

約数の個数: 80

約数和(自身を含む): 48298825344

約数和(自身を除く): 26791008496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 157, 262, 314, 524, 628, 917, 1048, 1099, 1256, 1834, 2096, 2198, 2512, 3668, 4396, 7336, 8792, 9337, 14672, 17584, 18674, 20567, 37348, 41134, 65359, 74696, 82268, 130718, 143969, 149392, 164536, 261436, 287938, 329072, 522872, 575876, 1045744, 1151752, 1223147, 1465909, 2303504, 2446294, 2931818, 4892588, 5863636, 8562029, 9785176, 10261363, 11727272, 17124058, 19570352, 20522726, 23454544, 34248116, 41045452, 68496232, 82090904, 136992464, 164181808, 192034079, 384068158, 768136316, 1344238553, 1536272632, 2688477106, 3072545264, 5376954212, 10753908424, 21507816848]

約数ペア:

[(1, 21507816848), (2, 10753908424), (4, 5376954212), (7, 3072545264), (8, 2688477106), (14, 1536272632), (16, 1344238553), (28, 768136316), (56, 384068158), (112, 192034079), (131, 164181808), (157, 136992464), (262, 82090904), (314, 68496232), (524, 41045452), (628, 34248116), (917, 23454544), (1048, 20522726), (1099, 19570352), (1256, 17124058), (1834, 11727272), (2096, 10261363), (2198, 9785176), (2512, 8562029), (3668, 5863636), (4396, 4892588), (7336, 2931818), (8792, 2446294), (9337, 2303504), (14672, 1465909), (17584, 1223147), (18674, 1151752), (20567, 1045744), (37348, 575876), (41134, 522872), (65359, 329072), (74696, 287938), (82268, 261436), (130718, 164536), (143969, 149392)]