21113763

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13613}}^1$

素因数の和:13674

約数の個数: 16

約数和(自身を含む): 31366656

約数和(自身を除く): 10252893

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13613, 40839, 149743, 449229, 639811, 1919433, 7037921, 21113763]

約数ペア:

[(1, 21113763), (3, 7037921), (11, 1919433), (33, 639811), (47, 449229), (141, 149743), (517, 40839), (1551, 13613)]