28278945

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 50948352

約数和(自身を除く): 22669407

約数列:

[1, 3, 5, 9, 15, 45, 53, 71, 159, 167, 213, 265, 355, 477, 501, 639, 795, 835, 1065, 1503, 2385, 2505, 3195, 3763, 7515, 8851, 11289, 11857, 18815, 26553, 33867, 35571, 44255, 56445, 59285, 79659, 106713, 132765, 169335, 177855, 398295, 533565, 628421, 1885263, 3142105, 5655789, 9426315, 28278945]

約数ペア:

[(1, 28278945), (3, 9426315), (5, 5655789), (9, 3142105), (15, 1885263), (45, 628421), (53, 533565), (71, 398295), (159, 177855), (167, 169335), (213, 132765), (265, 106713), (355, 79659), (477, 59285), (501, 56445), (639, 44255), (795, 35571), (835, 33867), (1065, 26553), (1503, 18815), (2385, 11857), (2505, 11289), (3195, 8851), (3763, 7515)]