21109690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{643}}^1$

素因数の和:731

約数の個数: 48

約数和(自身を含む): 44930592

約数和(自身を除く): 23820902

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 67, 70, 98, 134, 245, 335, 469, 490, 643, 670, 938, 1286, 2345, 3215, 3283, 4501, 4690, 6430, 6566, 9002, 16415, 22505, 31507, 32830, 43081, 45010, 63014, 86162, 157535, 215405, 301567, 315070, 430810, 603134, 1507835, 2110969, 3015670, 4221938, 10554845, 21109690]

約数ペア:

[(1, 21109690), (2, 10554845), (5, 4221938), (7, 3015670), (10, 2110969), (14, 1507835), (35, 603134), (49, 430810), (67, 315070), (70, 301567), (98, 215405), (134, 157535), (245, 86162), (335, 63014), (469, 45010), (490, 43081), (643, 32830), (670, 31507), (938, 22505), (1286, 16415), (2345, 9002), (3215, 6566), (3283, 6430), (4501, 4690)]