21117513

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1\times {\mathrm{457}}^1$

素因数の和:744

約数の個数: 16

約数和(自身を含む): 28740416

約数和(自身を除く): 7622903

約数列:

[1, 3, 73, 211, 219, 457, 633, 1371, 15403, 33361, 46209, 96427, 100083, 289281, 7039171, 21117513]

約数ペア:

[(1, 21117513), (3, 7039171), (73, 289281), (211, 100083), (219, 96427), (457, 46209), (633, 33361), (1371, 15403)]