20947966

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 35548128

約数和(自身を除く): 14600162

約数列:

[1, 2, 13, 26, 41, 43, 82, 86, 457, 533, 559, 914, 1066, 1118, 1763, 3526, 5941, 11882, 18737, 19651, 22919, 37474, 39302, 45838, 243581, 255463, 487162, 510926, 805691, 1611382, 10473983, 20947966]

約数ペア:

[(1, 20947966), (2, 10473983), (13, 1611382), (26, 805691), (41, 510926), (43, 487162), (82, 255463), (86, 243581), (457, 45838), (533, 39302), (559, 37474), (914, 22919), (1066, 19651), (1118, 18737), (1763, 11882), (3526, 5941)]