18540560

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4931}}^1$

素因数の和:4991

約数の個数: 40

約数和(自身を含む): 44032896

約数和(自身を除く): 25492336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4931, 9862, 19724, 24655, 39448, 49310, 78896, 98620, 197240, 231757, 394480, 463514, 927028, 1158785, 1854056, 2317570, 3708112, 4635140, 9270280, 18540560]

約数ペア:

[(1, 18540560), (2, 9270280), (4, 4635140), (5, 3708112), (8, 2317570), (10, 1854056), (16, 1158785), (20, 927028), (40, 463514), (47, 394480), (80, 231757), (94, 197240), (188, 98620), (235, 78896), (376, 49310), (470, 39448), (752, 24655), (940, 19724), (1880, 9862), (3760, 4931)]