21536140

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{4003}}^1$

素因数の和:4281

約数の個数: 24

約数和(自身を含む): 45405360

約数和(自身を除く): 23869220

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 4003, 5380, 8006, 16012, 20015, 40030, 80060, 1076807, 2153614, 4307228, 5384035, 10768070, 21536140]

約数ペア:

[(1, 21536140), (2, 10768070), (4, 5384035), (5, 4307228), (10, 2153614), (20, 1076807), (269, 80060), (538, 40030), (1076, 20015), (1345, 16012), (2690, 8006), (4003, 5380)]