21690324

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^2\times {\mathrm{1669}}^1$

素因数の和:1717

約数の個数: 54

約数和(自身を含む): 57900570

約数和(自身を除く): 36210246

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 361, 684, 722, 1083, 1444, 1669, 2166, 3249, 3338, 4332, 5007, 6498, 6676, 10014, 12996, 15021, 20028, 30042, 31711, 60084, 63422, 95133, 126844, 190266, 285399, 380532, 570798, 602509, 1141596, 1205018, 1807527, 2410036, 3615054, 5422581, 7230108, 10845162, 21690324]

約数ペア:

[(1, 21690324), (2, 10845162), (3, 7230108), (4, 5422581), (6, 3615054), (9, 2410036), (12, 1807527), (18, 1205018), (19, 1141596), (36, 602509), (38, 570798), (57, 380532), (76, 285399), (114, 190266), (171, 126844), (228, 95133), (342, 63422), (361, 60084), (684, 31711), (722, 30042), (1083, 20028), (1444, 15021), (1669, 12996), (2166, 10014), (3249, 6676), (3338, 6498), (4332, 5007)]