20010782

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 34712064

約数和(自身を除く): 14701282

約数列:

[1, 2, 11, 22, 23, 46, 71, 142, 253, 506, 557, 781, 1114, 1562, 1633, 3266, 6127, 12254, 12811, 17963, 25622, 35926, 39547, 79094, 140921, 281842, 435017, 870034, 909581, 1819162, 10005391, 20010782]

約数ペア:

[(1, 20010782), (2, 10005391), (11, 1819162), (22, 909581), (23, 870034), (46, 435017), (71, 281842), (142, 140921), (253, 79094), (506, 39547), (557, 35926), (781, 25622), (1114, 17963), (1562, 12811), (1633, 12254), (3266, 6127)]