21497672

素因数分解:

$2^3\times 7^2\times {\mathrm{173}}^1\times {\mathrm{317}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 47308860

約数和(自身を除く): 25811188

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 173, 196, 317, 346, 392, 634, 692, 1211, 1268, 1384, 2219, 2422, 2536, 4438, 4844, 8477, 8876, 9688, 15533, 16954, 17752, 31066, 33908, 54841, 62132, 67816, 109682, 124264, 219364, 383887, 438728, 767774, 1535548, 2687209, 3071096, 5374418, 10748836, 21497672]

約数ペア:

[(1, 21497672), (2, 10748836), (4, 5374418), (7, 3071096), (8, 2687209), (14, 1535548), (28, 767774), (49, 438728), (56, 383887), (98, 219364), (173, 124264), (196, 109682), (317, 67816), (346, 62132), (392, 54841), (634, 33908), (692, 31066), (1211, 17752), (1268, 16954), (1384, 15533), (2219, 9688), (2422, 8876), (2536, 8477), (4438, 4844)]