21046460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{277}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 46236960

約数和(自身を除く): 25190500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 131, 145, 262, 277, 290, 524, 554, 580, 655, 1108, 1310, 1385, 2620, 2770, 3799, 5540, 7598, 8033, 15196, 16066, 18995, 32132, 36287, 37990, 40165, 72574, 75980, 80330, 145148, 160660, 181435, 362870, 725740, 1052323, 2104646, 4209292, 5261615, 10523230, 21046460]

約数ペア:

[(1, 21046460), (2, 10523230), (4, 5261615), (5, 4209292), (10, 2104646), (20, 1052323), (29, 725740), (58, 362870), (116, 181435), (131, 160660), (145, 145148), (262, 80330), (277, 75980), (290, 72574), (524, 40165), (554, 37990), (580, 36287), (655, 32132), (1108, 18995), (1310, 16066), (1385, 15196), (2620, 8033), (2770, 7598), (3799, 5540)]