21375417

素因数分解:

$3^1\times 7^3\times {\mathrm{20773}}^1$

素因数の和:20797

約数の個数: 16

約数和(自身を含む): 33238400

約数和(自身を除く): 11862983

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 20773, 62319, 145411, 436233, 1017877, 3053631, 7125139, 21375417]

約数ペア:

[(1, 21375417), (3, 7125139), (7, 3053631), (21, 1017877), (49, 436233), (147, 145411), (343, 62319), (1029, 20773)]