21493206

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3967}}^1$

素因数の和:4025

約数の個数: 48

約数和(自身を含む): 54472704

約数和(自身を除く): 32979498

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 3967, 5418, 7934, 11901, 23802, 27769, 35703, 55538, 71406, 83307, 166614, 170581, 249921, 341162, 499842, 511743, 1023486, 1194067, 1535229, 2388134, 3070458, 3582201, 7164402, 10746603, 21493206]

約数ペア:

[(1, 21493206), (2, 10746603), (3, 7164402), (6, 3582201), (7, 3070458), (9, 2388134), (14, 1535229), (18, 1194067), (21, 1023486), (42, 511743), (43, 499842), (63, 341162), (86, 249921), (126, 170581), (129, 166614), (258, 83307), (301, 71406), (387, 55538), (602, 35703), (774, 27769), (903, 23802), (1806, 11901), (2709, 7934), (3967, 5418)]