21215565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1433}}^1$

素因数の和:1498

約数の個数: 48

約数和(自身を含む): 42951168

約数和(自身を除く): 21735603

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 63, 105, 141, 235, 315, 329, 423, 705, 987, 1433, 1645, 2115, 2961, 4299, 4935, 7165, 10031, 12897, 14805, 21495, 30093, 50155, 64485, 67351, 90279, 150465, 202053, 336755, 451395, 471457, 606159, 1010265, 1414371, 2357285, 3030795, 4243113, 7071855, 21215565]

約数ペア:

[(1, 21215565), (3, 7071855), (5, 4243113), (7, 3030795), (9, 2357285), (15, 1414371), (21, 1010265), (35, 606159), (45, 471457), (47, 451395), (63, 336755), (105, 202053), (141, 150465), (235, 90279), (315, 67351), (329, 64485), (423, 50155), (705, 30093), (987, 21495), (1433, 14805), (1645, 12897), (2115, 10031), (2961, 7165), (4299, 4935)]