18702440

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1523}}^1$

素因数の和:1841

約数の個数: 32

約数和(自身を含む): 42245280

約数和(自身を除く): 23542840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1523, 1535, 2456, 3046, 3070, 6092, 6140, 7615, 12184, 12280, 15230, 30460, 60920, 467561, 935122, 1870244, 2337805, 3740488, 4675610, 9351220, 18702440]

約数ペア:

[(1, 18702440), (2, 9351220), (4, 4675610), (5, 3740488), (8, 2337805), (10, 1870244), (20, 935122), (40, 467561), (307, 60920), (614, 30460), (1228, 15230), (1523, 12280), (1535, 12184), (2456, 7615), (3046, 6140), (3070, 6092)]