20311605

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 36756720

約数和(自身を除く): 16445115

約数列:

[1, 3, 5, 9, 15, 41, 45, 101, 109, 123, 205, 303, 327, 369, 505, 545, 615, 909, 981, 1515, 1635, 1845, 4141, 4469, 4545, 4905, 11009, 12423, 13407, 20705, 22345, 33027, 37269, 40221, 55045, 62115, 67035, 99081, 165135, 186345, 201105, 451369, 495405, 1354107, 2256845, 4062321, 6770535, 20311605]

約数ペア:

[(1, 20311605), (3, 6770535), (5, 4062321), (9, 2256845), (15, 1354107), (41, 495405), (45, 451369), (101, 201105), (109, 186345), (123, 165135), (205, 99081), (303, 67035), (327, 62115), (369, 55045), (505, 40221), (545, 37269), (615, 33027), (909, 22345), (981, 20705), (1515, 13407), (1635, 12423), (1845, 11009), (4141, 4905), (4469, 4545)]