19998496

素因数分解:

$2^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1223}}^1$

素因数の和:1313

約数の個数: 48

約数和(自身を含む): 45650304

約数和(自身を除く): 25651808

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 73, 112, 146, 224, 292, 511, 584, 1022, 1168, 1223, 2044, 2336, 2446, 4088, 4892, 8176, 8561, 9784, 16352, 17122, 19568, 34244, 39136, 68488, 89279, 136976, 178558, 273952, 357116, 624953, 714232, 1249906, 1428464, 2499812, 2856928, 4999624, 9999248, 19998496]

約数ペア:

[(1, 19998496), (2, 9999248), (4, 4999624), (7, 2856928), (8, 2499812), (14, 1428464), (16, 1249906), (28, 714232), (32, 624953), (56, 357116), (73, 273952), (112, 178558), (146, 136976), (224, 89279), (292, 68488), (511, 39136), (584, 34244), (1022, 19568), (1168, 17122), (1223, 16352), (2044, 9784), (2336, 8561), (2446, 8176), (4088, 4892)]