21193180

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{8089}}^1$

素因数の和:8229

約数の個数: 24

約数和(自身を含む): 44850960

約数和(自身を除く): 23657780

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 8089, 16178, 32356, 40445, 80890, 161780, 1059659, 2119318, 4238636, 5298295, 10596590, 21193180]

約数ペア:

[(1, 21193180), (2, 10596590), (4, 5298295), (5, 4238636), (10, 2119318), (20, 1059659), (131, 161780), (262, 80890), (524, 40445), (655, 32356), (1310, 16178), (2620, 8089)]