20144481

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{233}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 12203679

約数列:

[1, 3, 7, 21, 23, 69, 161, 179, 233, 483, 537, 699, 1253, 1631, 3759, 4117, 4893, 5359, 12351, 16077, 28819, 37513, 41707, 86457, 112539, 125121, 291949, 875847, 959261, 2877783, 6714827, 20144481]

約数ペア:

[(1, 20144481), (3, 6714827), (7, 2877783), (21, 959261), (23, 875847), (69, 291949), (161, 125121), (179, 112539), (233, 86457), (483, 41707), (537, 37513), (699, 28819), (1253, 16077), (1631, 12351), (3759, 5359), (4117, 4893)]