20615715

素因数分解:

$3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{467}}^1$

素因数の和:593

約数の個数: 40

約数和(自身を含む): 37374480

約数和(自身を除く): 16758765

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 135, 327, 405, 467, 545, 981, 1401, 1635, 2335, 2943, 4203, 4905, 7005, 8829, 12609, 14715, 21015, 37827, 44145, 50903, 63045, 152709, 189135, 254515, 458127, 763545, 1374381, 2290635, 4123143, 6871905, 20615715]

約数ペア:

[(1, 20615715), (3, 6871905), (5, 4123143), (9, 2290635), (15, 1374381), (27, 763545), (45, 458127), (81, 254515), (109, 189135), (135, 152709), (327, 63045), (405, 50903), (467, 44145), (545, 37827), (981, 21015), (1401, 14715), (1635, 12609), (2335, 8829), (2943, 7005), (4203, 4905)]