21239316

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{947}}^1$

素因数の和:1053

約数の個数: 72

約数和(自身を含む): 62112960

約数和(自身を除く): 40873644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 89, 126, 178, 252, 267, 356, 534, 623, 801, 947, 1068, 1246, 1602, 1869, 1894, 2492, 2841, 3204, 3738, 3788, 5607, 5682, 6629, 7476, 8523, 11214, 11364, 13258, 17046, 19887, 22428, 26516, 34092, 39774, 59661, 79548, 84283, 119322, 168566, 238644, 252849, 337132, 505698, 589981, 758547, 1011396, 1179962, 1517094, 1769943, 2359924, 3034188, 3539886, 5309829, 7079772, 10619658, 21239316]

約数ペア:

[(1, 21239316), (2, 10619658), (3, 7079772), (4, 5309829), (6, 3539886), (7, 3034188), (9, 2359924), (12, 1769943), (14, 1517094), (18, 1179962), (21, 1011396), (28, 758547), (36, 589981), (42, 505698), (63, 337132), (84, 252849), (89, 238644), (126, 168566), (178, 119322), (252, 84283), (267, 79548), (356, 59661), (534, 39774), (623, 34092), (801, 26516), (947, 22428), (1068, 19887), (1246, 17046), (1602, 13258), (1869, 11364), (1894, 11214), (2492, 8523), (2841, 7476), (3204, 6629), (3738, 5682), (3788, 5607)]