20616585

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 37359168

約数和(自身を除く): 16742583

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 121, 165, 185, 307, 363, 407, 555, 605, 921, 1221, 1535, 1815, 2035, 3377, 4477, 4605, 6105, 10131, 11359, 13431, 16885, 22385, 34077, 37147, 50655, 56795, 67155, 111441, 124949, 170385, 185735, 374847, 557205, 624745, 1374439, 1874235, 4123317, 6872195, 20616585]

約数ペア:

[(1, 20616585), (3, 6872195), (5, 4123317), (11, 1874235), (15, 1374439), (33, 624745), (37, 557205), (55, 374847), (111, 185735), (121, 170385), (165, 124949), (185, 111441), (307, 67155), (363, 56795), (407, 50655), (555, 37147), (605, 34077), (921, 22385), (1221, 16885), (1535, 13431), (1815, 11359), (2035, 10131), (3377, 6105), (4477, 4605)]