12721345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 19095552

約数和(自身を除く): 6374207

約数列:

[1, 5, 7, 13, 35, 65, 73, 91, 365, 383, 455, 511, 949, 1915, 2555, 2681, 4745, 4979, 6643, 13405, 24895, 27959, 33215, 34853, 139795, 174265, 195713, 363467, 978565, 1817335, 2544269, 12721345]

約数ペア:

[(1, 12721345), (5, 2544269), (7, 1817335), (13, 978565), (35, 363467), (65, 195713), (73, 174265), (91, 139795), (365, 34853), (383, 33215), (455, 27959), (511, 24895), (949, 13405), (1915, 6643), (2555, 4979), (2681, 4745)]