18937737

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1217}}^1$

素因数の和:1262

約数の個数: 48

約数和(自身を含む): 35468160

約数和(自身を除く): 16530423

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 91, 117, 133, 171, 247, 273, 399, 741, 819, 1197, 1217, 1729, 2223, 3651, 5187, 8519, 10953, 15561, 15821, 23123, 25557, 47463, 69369, 76671, 110747, 142389, 161861, 208107, 300599, 332241, 485583, 901797, 996723, 1456749, 2104193, 2705391, 6312579, 18937737]

約数ペア:

[(1, 18937737), (3, 6312579), (7, 2705391), (9, 2104193), (13, 1456749), (19, 996723), (21, 901797), (39, 485583), (57, 332241), (63, 300599), (91, 208107), (117, 161861), (133, 142389), (171, 110747), (247, 76671), (273, 69369), (399, 47463), (741, 25557), (819, 23123), (1197, 15821), (1217, 15561), (1729, 10953), (2223, 8519), (3651, 5187)]