28758440

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{2297}}^1$

素因数の和:2621

約数の個数: 32

約数和(自身を含む): 64941480

約数和(自身を除く): 36183040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2297, 2504, 3130, 4594, 6260, 9188, 11485, 12520, 18376, 22970, 45940, 91880, 718961, 1437922, 2875844, 3594805, 5751688, 7189610, 14379220, 28758440]

約数ペア:

[(1, 28758440), (2, 14379220), (4, 7189610), (5, 5751688), (8, 3594805), (10, 2875844), (20, 1437922), (40, 718961), (313, 91880), (626, 45940), (1252, 22970), (1565, 18376), (2297, 12520), (2504, 11485), (3130, 9188), (4594, 6260)]