20684521

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 26772480

約数和(自身を除く): 6087959

約数列:

[1, 11, 13, 19, 23, 143, 209, 247, 253, 299, 331, 437, 2717, 3289, 3641, 4303, 4807, 5681, 6289, 7613, 47333, 62491, 69179, 81757, 83743, 98969, 144647, 899327, 1088659, 1591117, 1880411, 20684521]

約数ペア:

[(1, 20684521), (11, 1880411), (13, 1591117), (19, 1088659), (23, 899327), (143, 144647), (209, 98969), (247, 83743), (253, 81757), (299, 69179), (331, 62491), (437, 47333), (2717, 7613), (3289, 6289), (3641, 5681), (4303, 4807)]