16920801

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1901}}^1$

素因数の和:1973

約数の個数: 24

約数和(自身を含む): 26110656

約数和(自身を除く): 9189855

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 1901, 2967, 5703, 8901, 17109, 43723, 81743, 131169, 245229, 393507, 735687, 1880089, 5640267, 16920801]

約数ペア:

[(1, 16920801), (3, 5640267), (9, 1880089), (23, 735687), (43, 393507), (69, 245229), (129, 131169), (207, 81743), (387, 43723), (989, 17109), (1901, 8901), (2967, 5703)]