18181345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1289}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 27740160

約数和(自身を除く): 9558815

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 155, 217, 403, 455, 1085, 1289, 2015, 2821, 6445, 9023, 14105, 16757, 39959, 45115, 83785, 117299, 199795, 279713, 519467, 586495, 1398565, 2597335, 3636269, 18181345]

約数ペア:

[(1, 18181345), (5, 3636269), (7, 2597335), (13, 1398565), (31, 586495), (35, 519467), (65, 279713), (91, 199795), (155, 117299), (217, 83785), (403, 45115), (455, 39959), (1085, 16757), (1289, 14105), (2015, 9023), (2821, 6445)]