21052017

素因数分解:

$3^2\times 7^2\times {\mathrm{47737}}^1$

素因数の和:47757

約数の個数: 18

約数和(自身を含む): 35373858

約数和(自身を除く): 14321841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 47737, 143211, 334159, 429633, 1002477, 2339113, 3007431, 7017339, 21052017]

約数ペア:

[(1, 21052017), (3, 7017339), (7, 3007431), (9, 2339113), (21, 1002477), (49, 429633), (63, 334159), (147, 143211), (441, 47737)]