21513588

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{241}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 51877056

約数和(自身を除く): 30363468

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 173, 241, 258, 346, 482, 516, 519, 692, 723, 964, 1038, 1446, 2076, 2892, 7439, 10363, 14878, 20726, 22317, 29756, 31089, 41452, 41693, 44634, 62178, 83386, 89268, 124356, 125079, 166772, 250158, 500316, 1792799, 3585598, 5378397, 7171196, 10756794, 21513588]

約数ペア:

[(1, 21513588), (2, 10756794), (3, 7171196), (4, 5378397), (6, 3585598), (12, 1792799), (43, 500316), (86, 250158), (129, 166772), (172, 125079), (173, 124356), (241, 89268), (258, 83386), (346, 62178), (482, 44634), (516, 41693), (519, 41452), (692, 31089), (723, 29756), (964, 22317), (1038, 20726), (1446, 14878), (2076, 10363), (2892, 7439)]