16989021

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 60

約数和(自身を含む): 30979872

約数和(自身を除く): 13990851

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 83, 133, 171, 189, 249, 361, 399, 513, 567, 581, 747, 1083, 1197, 1539, 1577, 1743, 2241, 2527, 3249, 3591, 4731, 5229, 6723, 7581, 9747, 10773, 11039, 14193, 15687, 22743, 29241, 29963, 33117, 42579, 47061, 68229, 89889, 99351, 127737, 204687, 209741, 269667, 298053, 629223, 809001, 894159, 1887669, 2427003, 5663007, 16989021]

約数ペア:

[(1, 16989021), (3, 5663007), (7, 2427003), (9, 1887669), (19, 894159), (21, 809001), (27, 629223), (57, 298053), (63, 269667), (81, 209741), (83, 204687), (133, 127737), (171, 99351), (189, 89889), (249, 68229), (361, 47061), (399, 42579), (513, 33117), (567, 29963), (581, 29241), (747, 22743), (1083, 15687), (1197, 14193), (1539, 11039), (1577, 10773), (1743, 9747), (2241, 7581), (2527, 6723), (3249, 5229), (3591, 4731)]