21525070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^2$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 45648864

約数和(自身を除く): 24123794

約数列:

[1, 2, 5, 7, 10, 14, 35, 61, 70, 71, 122, 142, 305, 355, 427, 497, 610, 710, 854, 994, 2135, 2485, 4270, 4331, 4970, 5041, 8662, 10082, 21655, 25205, 30317, 35287, 43310, 50410, 60634, 70574, 151585, 176435, 303170, 307501, 352870, 615002, 1537505, 2152507, 3075010, 4305014, 10762535, 21525070]

約数ペア:

[(1, 21525070), (2, 10762535), (5, 4305014), (7, 3075010), (10, 2152507), (14, 1537505), (35, 615002), (61, 352870), (70, 307501), (71, 303170), (122, 176435), (142, 151585), (305, 70574), (355, 60634), (427, 50410), (497, 43310), (610, 35287), (710, 30317), (854, 25205), (994, 21655), (2135, 10082), (2485, 8662), (4270, 5041), (4331, 4970)]