19811295

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{577}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 39673920

約数和(自身を除く): 19862625

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 109, 315, 327, 545, 577, 763, 981, 1635, 1731, 2289, 2885, 3815, 4039, 4905, 5193, 6867, 8655, 11445, 12117, 20195, 25965, 34335, 36351, 60585, 62893, 181755, 188679, 314465, 440251, 566037, 943395, 1320753, 2201255, 2830185, 3962259, 6603765, 19811295]

約数ペア:

[(1, 19811295), (3, 6603765), (5, 3962259), (7, 2830185), (9, 2201255), (15, 1320753), (21, 943395), (35, 566037), (45, 440251), (63, 314465), (105, 188679), (109, 181755), (315, 62893), (327, 60585), (545, 36351), (577, 34335), (763, 25965), (981, 20195), (1635, 12117), (1731, 11445), (2289, 8655), (2885, 6867), (3815, 5193), (4039, 4905)]