21578718

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{3863}}^1$

素因数の和:3901

約数の個数: 48

約数和(自身を含む): 52859520

約数和(自身を除く): 31280802

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 49, 57, 98, 114, 133, 147, 266, 294, 399, 798, 931, 1862, 2793, 3863, 5586, 7726, 11589, 23178, 27041, 54082, 73397, 81123, 146794, 162246, 189287, 220191, 378574, 440382, 513779, 567861, 1027558, 1135722, 1541337, 3082674, 3596453, 7192906, 10789359, 21578718]

約数ペア:

[(1, 21578718), (2, 10789359), (3, 7192906), (6, 3596453), (7, 3082674), (14, 1541337), (19, 1135722), (21, 1027558), (38, 567861), (42, 513779), (49, 440382), (57, 378574), (98, 220191), (114, 189287), (133, 162246), (147, 146794), (266, 81123), (294, 73397), (399, 54082), (798, 27041), (931, 23178), (1862, 11589), (2793, 7726), (3863, 5586)]