21992418

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{797}}^1$

素因数の和:888

約数の個数: 64

約数和(自身を含む): 56689920

約数和(自身を除く): 34697502

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 73, 126, 146, 189, 219, 378, 438, 511, 657, 797, 1022, 1314, 1533, 1594, 1971, 2391, 3066, 3942, 4599, 4782, 5579, 7173, 9198, 11158, 13797, 14346, 16737, 21519, 27594, 33474, 43038, 50211, 58181, 100422, 116362, 150633, 174543, 301266, 349086, 407267, 523629, 814534, 1047258, 1221801, 1570887, 2443602, 3141774, 3665403, 7330806, 10996209, 21992418]

約数ペア:

[(1, 21992418), (2, 10996209), (3, 7330806), (6, 3665403), (7, 3141774), (9, 2443602), (14, 1570887), (18, 1221801), (21, 1047258), (27, 814534), (42, 523629), (54, 407267), (63, 349086), (73, 301266), (126, 174543), (146, 150633), (189, 116362), (219, 100422), (378, 58181), (438, 50211), (511, 43038), (657, 33474), (797, 27594), (1022, 21519), (1314, 16737), (1533, 14346), (1594, 13797), (1971, 11158), (2391, 9198), (3066, 7173), (3942, 5579), (4599, 4782)]