21642285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3889}}^1$

素因数の和:3957

約数の個数: 32

約数和(自身を含む): 40331520

約数和(自身を除く): 18689235

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3889, 5565, 11667, 19445, 27223, 58335, 81669, 136115, 206117, 408345, 618351, 1030585, 1442819, 3091755, 4328457, 7214095, 21642285]

約数ペア:

[(1, 21642285), (3, 7214095), (5, 4328457), (7, 3091755), (15, 1442819), (21, 1030585), (35, 618351), (53, 408345), (105, 206117), (159, 136115), (265, 81669), (371, 58335), (795, 27223), (1113, 19445), (1855, 11667), (3889, 5565)]