20702451

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:125

約数の個数: 64

約数和(自身を含む): 36864000

約数和(自身を除く): 16161549

約数列:

[1, 3, 7, 11, 21, 31, 33, 49, 59, 77, 93, 147, 177, 217, 231, 341, 343, 413, 539, 649, 651, 1023, 1029, 1239, 1519, 1617, 1829, 1947, 2387, 2891, 3773, 4543, 4557, 5487, 7161, 8673, 10633, 11319, 12803, 13629, 16709, 20119, 20237, 31801, 31899, 38409, 50127, 60357, 60711, 89621, 95403, 116963, 140833, 222607, 268863, 350889, 422499, 627347, 667821, 985831, 1882041, 2957493, 6900817, 20702451]

約数ペア:

[(1, 20702451), (3, 6900817), (7, 2957493), (11, 1882041), (21, 985831), (31, 667821), (33, 627347), (49, 422499), (59, 350889), (77, 268863), (93, 222607), (147, 140833), (177, 116963), (217, 95403), (231, 89621), (341, 60711), (343, 60357), (413, 50127), (539, 38409), (649, 31899), (651, 31801), (1023, 20237), (1029, 20119), (1239, 16709), (1519, 13629), (1617, 12803), (1829, 11319), (1947, 10633), (2387, 8673), (2891, 7161), (3773, 5487), (4543, 4557)]