21853090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4397}}^1$

素因数の和:4482

約数の個数: 32

約数和(自身を含む): 45598464

約数和(自身を除く): 23745374

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4397, 4970, 8794, 21985, 30779, 43970, 61558, 153895, 307790, 312187, 624374, 1560935, 2185309, 3121870, 4370618, 10926545, 21853090]

約数ペア:

[(1, 21853090), (2, 10926545), (5, 4370618), (7, 3121870), (10, 2185309), (14, 1560935), (35, 624374), (70, 312187), (71, 307790), (142, 153895), (355, 61558), (497, 43970), (710, 30779), (994, 21985), (2485, 8794), (4397, 4970)]