21274869

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 15496971

約数列:

[1, 3, 7, 11, 21, 33, 49, 59, 77, 147, 177, 223, 231, 413, 539, 649, 669, 1239, 1561, 1617, 1947, 2453, 2891, 4543, 4683, 7359, 8673, 10927, 13157, 13629, 17171, 31801, 32781, 39471, 51513, 92099, 95403, 120197, 144727, 276297, 360591, 434181, 644693, 1013089, 1934079, 3039267, 7091623, 21274869]

約数ペア:

[(1, 21274869), (3, 7091623), (7, 3039267), (11, 1934079), (21, 1013089), (33, 644693), (49, 434181), (59, 360591), (77, 276297), (147, 144727), (177, 120197), (223, 95403), (231, 92099), (413, 51513), (539, 39471), (649, 32781), (669, 31801), (1239, 17171), (1561, 13629), (1617, 13157), (1947, 10927), (2453, 8673), (2891, 7359), (4543, 4683)]