21182805

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67247}}^1$

素因数の和:67265

約数の個数: 24

約数和(自身を含む): 41962752

約数和(自身を除く): 20779947

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67247, 201741, 336235, 470729, 605223, 1008705, 1412187, 2353645, 3026115, 4236561, 7060935, 21182805]

約数ペア:

[(1, 21182805), (3, 7060935), (5, 4236561), (7, 3026115), (9, 2353645), (15, 1412187), (21, 1008705), (35, 605223), (45, 470729), (63, 336235), (105, 201741), (315, 67247)]