21725406

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{28069}}^1$

素因数の和:28120

約数の個数: 24

約数和(自身を含む): 48168120

約数和(自身を除く): 26442714

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 28069, 56138, 84207, 168414, 252621, 505242, 1206967, 2413934, 3620901, 7241802, 10862703, 21725406]

約数ペア:

[(1, 21725406), (2, 10862703), (3, 7241802), (6, 3620901), (9, 2413934), (18, 1206967), (43, 505242), (86, 252621), (129, 168414), (258, 84207), (387, 56138), (774, 28069)]