21768145

素因数分解:

$5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2789}}^1$

素因数の和:3024

約数の個数: 16

約数和(自身を含む): 29998080

約数和(自身を除く): 8229935

約数列:

[1, 5, 7, 35, 223, 1115, 1561, 2789, 7805, 13945, 19523, 97615, 621947, 3109735, 4353629, 21768145]

約数ペア:

[(1, 21768145), (5, 4353629), (7, 3109735), (35, 621947), (223, 97615), (1115, 19523), (1561, 13945), (2789, 7805)]