21000434749

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{953}}^1$

素因数の和:1250

約数の個数: 48

約数和(自身を含む): 25683816960

約数和(自身を除く): 4683382211

約数列:

[1, 7, 31, 49, 89, 163, 217, 623, 953, 1141, 1519, 2759, 4361, 5053, 6671, 7987, 14507, 19313, 29543, 35371, 46697, 84817, 101549, 135191, 155339, 206801, 247597, 449717, 593719, 710843, 1087373, 1447607, 2629327, 3148019, 4156033, 4815509, 7611611, 13825171, 18405289, 22036133, 33708563, 96776197, 128837023, 235959941, 428580301, 677433379, 3000062107, 21000434749]

約数ペア:

[(1, 21000434749), (7, 3000062107), (31, 677433379), (49, 428580301), (89, 235959941), (163, 128837023), (217, 96776197), (623, 33708563), (953, 22036133), (1141, 18405289), (1519, 13825171), (2759, 7611611), (4361, 4815509), (5053, 4156033), (6671, 3148019), (7987, 2629327), (14507, 1447607), (19313, 1087373), (29543, 710843), (35371, 593719), (46697, 449717), (84817, 247597), (101549, 206801), (135191, 155339)]