20954480

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5573}}^1$

素因数の和:5633

約数の個数: 40

約数和(自身を含む): 49764672

約数和(自身を除く): 28810192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5573, 11146, 22292, 27865, 44584, 55730, 89168, 111460, 222920, 261931, 445840, 523862, 1047724, 1309655, 2095448, 2619310, 4190896, 5238620, 10477240, 20954480]

約数ペア:

[(1, 20954480), (2, 10477240), (4, 5238620), (5, 4190896), (8, 2619310), (10, 2095448), (16, 1309655), (20, 1047724), (40, 523862), (47, 445840), (80, 261931), (94, 222920), (188, 111460), (235, 89168), (376, 55730), (470, 44584), (752, 27865), (940, 22292), (1880, 11146), (3760, 5573)]