21528813

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1\times {\mathrm{457}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 29546496

約数和(自身を除く): 8017683

約数列:

[1, 3, 41, 123, 383, 457, 1149, 1371, 15703, 18737, 47109, 56211, 175031, 525093, 7176271, 21528813]

約数ペア:

[(1, 21528813), (3, 7176271), (41, 525093), (123, 175031), (383, 56211), (457, 47109), (1149, 18737), (1371, 15703)]