21872865

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29759}}^1$

素因数の和:29781

約数の個数: 24

約数和(自身を含む): 40711680

約数和(自身を除く): 18838815

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29759, 89277, 148795, 208313, 446385, 624939, 1041565, 1458191, 3124695, 4374573, 7290955, 21872865]

約数ペア:

[(1, 21872865), (3, 7290955), (5, 4374573), (7, 3124695), (15, 1458191), (21, 1041565), (35, 624939), (49, 446385), (105, 208313), (147, 148795), (245, 89277), (735, 29759)]