28089985

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1489}}^1$

素因数の和:1526

約数の個数: 32

約数和(自身を含む): 42912000

約数和(自身を除く): 14822015

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1489, 1715, 2695, 3773, 7445, 10423, 16379, 18865, 52115, 72961, 81895, 114653, 364805, 510727, 573265, 802571, 2553635, 4012855, 5617997, 28089985]

約数ペア:

[(1, 28089985), (5, 5617997), (7, 4012855), (11, 2553635), (35, 802571), (49, 573265), (55, 510727), (77, 364805), (245, 114653), (343, 81895), (385, 72961), (539, 52115), (1489, 18865), (1715, 16379), (2695, 10423), (3773, 7445)]