20348955

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 40227840

約数和(自身を除く): 19878885

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 71, 99, 135, 165, 193, 213, 297, 355, 495, 579, 639, 781, 965, 1065, 1485, 1737, 1917, 2123, 2343, 2895, 3195, 3905, 5211, 6369, 7029, 8685, 9585, 10615, 11715, 13703, 19107, 21087, 26055, 31845, 35145, 41109, 57321, 68515, 95535, 105435, 123327, 150733, 205545, 286605, 369981, 452199, 616635, 753665, 1356597, 1849905, 2260995, 4069791, 6782985, 20348955]

約数ペア:

[(1, 20348955), (3, 6782985), (5, 4069791), (9, 2260995), (11, 1849905), (15, 1356597), (27, 753665), (33, 616635), (45, 452199), (55, 369981), (71, 286605), (99, 205545), (135, 150733), (165, 123327), (193, 105435), (213, 95535), (297, 68515), (355, 57321), (495, 41109), (579, 35145), (639, 31845), (781, 26055), (965, 21087), (1065, 19107), (1485, 13703), (1737, 11715), (1917, 10615), (2123, 9585), (2343, 8685), (2895, 7029), (3195, 6369), (3905, 5211)]