21509718

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{317}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 44326656

約数和(自身を除く): 22816938

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 263, 317, 526, 634, 789, 951, 1578, 1902, 11309, 13631, 22618, 27262, 33927, 40893, 67854, 81786, 83371, 166742, 250113, 500226, 3584953, 7169906, 10754859, 21509718]

約数ペア:

[(1, 21509718), (2, 10754859), (3, 7169906), (6, 3584953), (43, 500226), (86, 250113), (129, 166742), (258, 83371), (263, 81786), (317, 67854), (526, 40893), (634, 33927), (789, 27262), (951, 22618), (1578, 13631), (1902, 11309)]