20617335

素因数分解:

$3^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17122185

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 239, 243, 355, 405, 639, 717, 1065, 1195, 1215, 1917, 2151, 3195, 3585, 5751, 6453, 9585, 10755, 16969, 17253, 19359, 28755, 32265, 50907, 58077, 84845, 86265, 96795, 152721, 254535, 290385, 458163, 763605, 1374489, 2290815, 4123467, 6872445, 20617335]

約数ペア:

[(1, 20617335), (3, 6872445), (5, 4123467), (9, 2290815), (15, 1374489), (27, 763605), (45, 458163), (71, 290385), (81, 254535), (135, 152721), (213, 96795), (239, 86265), (243, 84845), (355, 58077), (405, 50907), (639, 32265), (717, 28755), (1065, 19359), (1195, 17253), (1215, 16969), (1917, 10755), (2151, 9585), (3195, 6453), (3585, 5751)]