21697312

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7451}}^1$

素因数の和:7481

約数の個数: 48

約数和(自身を含む): 52581312

約数和(自身を除く): 30884000

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7451, 14902, 29804, 52157, 59608, 96863, 104314, 119216, 193726, 208628, 238432, 387452, 417256, 678041, 774904, 834512, 1356082, 1549808, 1669024, 2712164, 3099616, 5424328, 10848656, 21697312]

約数ペア:

[(1, 21697312), (2, 10848656), (4, 5424328), (7, 3099616), (8, 2712164), (13, 1669024), (14, 1549808), (16, 1356082), (26, 834512), (28, 774904), (32, 678041), (52, 417256), (56, 387452), (91, 238432), (104, 208628), (112, 193726), (182, 119216), (208, 104314), (224, 96863), (364, 59608), (416, 52157), (728, 29804), (1456, 14902), (2912, 7451)]