21155475

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25643}}^1$

素因数の和:25667

約数の個数: 24

約数和(自身を含む): 38158272

約数和(自身を除く): 17002797

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25643, 76929, 128215, 282073, 384645, 641075, 846219, 1410365, 1923225, 4231095, 7051825, 21155475]

約数ペア:

[(1, 21155475), (3, 7051825), (5, 4231095), (11, 1923225), (15, 1410365), (25, 846219), (33, 641075), (55, 384645), (75, 282073), (165, 128215), (275, 76929), (825, 25643)]