28563880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17417}}^1$

素因数の和:17469

約数の個数: 32

約数和(自身を含む): 65840040

約数和(自身を除く): 37276160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17417, 34834, 69668, 87085, 139336, 174170, 348340, 696680, 714097, 1428194, 2856388, 3570485, 5712776, 7140970, 14281940, 28563880]

約数ペア:

[(1, 28563880), (2, 14281940), (4, 7140970), (5, 5712776), (8, 3570485), (10, 2856388), (20, 1428194), (40, 714097), (41, 696680), (82, 348340), (164, 174170), (205, 139336), (328, 87085), (410, 69668), (820, 34834), (1640, 17417)]