16226721

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 28828800

約数和(自身を除く): 12602079

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 109, 119, 139, 153, 327, 357, 417, 763, 973, 981, 1071, 1251, 1853, 2289, 2363, 2919, 5559, 6867, 7089, 8757, 12971, 15151, 16541, 16677, 21267, 38913, 45453, 49623, 106057, 116739, 136359, 148869, 257567, 318171, 772701, 954513, 1802969, 2318103, 5408907, 16226721]

約数ペア:

[(1, 16226721), (3, 5408907), (7, 2318103), (9, 1802969), (17, 954513), (21, 772701), (51, 318171), (63, 257567), (109, 148869), (119, 136359), (139, 116739), (153, 106057), (327, 49623), (357, 45453), (417, 38913), (763, 21267), (973, 16677), (981, 16541), (1071, 15151), (1251, 12971), (1853, 8757), (2289, 7089), (2363, 6867), (2919, 5559)]