9982220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 22360800

約数和(自身を除く): 12378580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 241, 380, 436, 482, 545, 964, 1090, 1205, 2071, 2180, 2410, 4142, 4579, 4820, 8284, 9158, 10355, 18316, 20710, 22895, 26269, 41420, 45790, 52538, 91580, 105076, 131345, 262690, 499111, 525380, 998222, 1996444, 2495555, 4991110, 9982220]

約数ペア:

[(1, 9982220), (2, 4991110), (4, 2495555), (5, 1996444), (10, 998222), (19, 525380), (20, 499111), (38, 262690), (76, 131345), (95, 105076), (109, 91580), (190, 52538), (218, 45790), (241, 41420), (380, 26269), (436, 22895), (482, 20710), (545, 18316), (964, 10355), (1090, 9158), (1205, 8284), (2071, 4820), (2180, 4579), (2410, 4142)]