18020975

素因数分解:

$5^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:384

約数の個数: 36

約数和(自身を含む): 26632224

約数和(自身を除く): 8611249

約数列:

[1, 5, 7, 25, 35, 47, 49, 175, 235, 245, 313, 329, 1175, 1225, 1565, 1645, 2191, 2303, 7825, 8225, 10955, 11515, 14711, 15337, 54775, 57575, 73555, 76685, 102977, 367775, 383425, 514885, 720839, 2574425, 3604195, 18020975]

約数ペア:

[(1, 18020975), (5, 3604195), (7, 2574425), (25, 720839), (35, 514885), (47, 383425), (49, 367775), (175, 102977), (235, 76685), (245, 73555), (313, 57575), (329, 54775), (1175, 15337), (1225, 14711), (1565, 11515), (1645, 10955), (2191, 8225), (2303, 7825)]