21413133

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 39168000

約数和(自身を除く): 17754867

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 67, 89, 133, 171, 189, 201, 267, 399, 469, 513, 603, 623, 801, 1197, 1273, 1407, 1691, 1809, 1869, 2403, 3591, 3819, 4221, 5073, 5607, 5963, 8911, 11457, 11837, 12663, 15219, 16821, 17889, 26733, 34371, 35511, 41741, 45657, 53667, 80199, 106533, 113297, 125223, 161001, 240597, 319599, 339891, 375669, 793079, 1019673, 1127007, 2379237, 3059019, 7137711, 21413133]

約数ペア:

[(1, 21413133), (3, 7137711), (7, 3059019), (9, 2379237), (19, 1127007), (21, 1019673), (27, 793079), (57, 375669), (63, 339891), (67, 319599), (89, 240597), (133, 161001), (171, 125223), (189, 113297), (201, 106533), (267, 80199), (399, 53667), (469, 45657), (513, 41741), (603, 35511), (623, 34371), (801, 26733), (1197, 17889), (1273, 16821), (1407, 15219), (1691, 12663), (1809, 11837), (1869, 11457), (2403, 8911), (3591, 5963), (3819, 5607), (4221, 5073)]