20481201

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:147

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 15000399

約数列:

[1, 3, 9, 13, 23, 27, 39, 43, 59, 69, 117, 129, 177, 207, 299, 351, 387, 531, 559, 621, 767, 897, 989, 1161, 1357, 1593, 1677, 2301, 2537, 2691, 2967, 4071, 5031, 6903, 7611, 8073, 8901, 12213, 12857, 15093, 17641, 20709, 22833, 26703, 32981, 36639, 38571, 52923, 58351, 68499, 98943, 115713, 158769, 175053, 296829, 347139, 476307, 525159, 758563, 890487, 1575477, 2275689, 6827067, 20481201]

約数ペア:

[(1, 20481201), (3, 6827067), (9, 2275689), (13, 1575477), (23, 890487), (27, 758563), (39, 525159), (43, 476307), (59, 347139), (69, 296829), (117, 175053), (129, 158769), (177, 115713), (207, 98943), (299, 68499), (351, 58351), (387, 52923), (531, 38571), (559, 36639), (621, 32981), (767, 26703), (897, 22833), (989, 20709), (1161, 17641), (1357, 15093), (1593, 12857), (1677, 12213), (2301, 8901), (2537, 8073), (2691, 7611), (2967, 6903), (4071, 5031)]