21705530

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4027}}^1$

素因数の和:4059

約数の個数: 48

約数和(自身を含む): 49592736

約数和(自身を除く): 27887206

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 4027, 5390, 8054, 20135, 28189, 40270, 44297, 56378, 88594, 140945, 197323, 221485, 281890, 310079, 394646, 442970, 620158, 986615, 1550395, 1973230, 2170553, 3100790, 4341106, 10852765, 21705530]

約数ペア:

[(1, 21705530), (2, 10852765), (5, 4341106), (7, 3100790), (10, 2170553), (11, 1973230), (14, 1550395), (22, 986615), (35, 620158), (49, 442970), (55, 394646), (70, 310079), (77, 281890), (98, 221485), (110, 197323), (154, 140945), (245, 88594), (385, 56378), (490, 44297), (539, 40270), (770, 28189), (1078, 20135), (2695, 8054), (4027, 5390)]