18893714

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:247

約数の個数: 48

約数和(自身を含む): 35431200

約数和(自身を除く): 16537486

約数列:

[1, 2, 7, 14, 19, 38, 49, 73, 98, 133, 139, 146, 266, 278, 511, 931, 973, 1022, 1387, 1862, 1946, 2641, 2774, 3577, 5282, 6811, 7154, 9709, 10147, 13622, 18487, 19418, 20294, 36974, 67963, 71029, 129409, 135926, 142058, 192793, 258818, 385586, 497203, 994406, 1349551, 2699102, 9446857, 18893714]

約数ペア:

[(1, 18893714), (2, 9446857), (7, 2699102), (14, 1349551), (19, 994406), (38, 497203), (49, 385586), (73, 258818), (98, 192793), (133, 142058), (139, 135926), (146, 129409), (266, 71029), (278, 67963), (511, 36974), (931, 20294), (973, 19418), (1022, 18487), (1387, 13622), (1862, 10147), (1946, 9709), (2641, 7154), (2774, 6811), (3577, 5282)]