21336500

素因数分解:

$2^2\times 5^3\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:465

約数の個数: 48

約数和(自身を含む): 47087040

約数和(自身を除く): 25750540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 139, 250, 278, 307, 500, 556, 614, 695, 1228, 1390, 1535, 2780, 3070, 3475, 6140, 6950, 7675, 13900, 15350, 17375, 30700, 34750, 38375, 42673, 69500, 76750, 85346, 153500, 170692, 213365, 426730, 853460, 1066825, 2133650, 4267300, 5334125, 10668250, 21336500]

約数ペア:

[(1, 21336500), (2, 10668250), (4, 5334125), (5, 4267300), (10, 2133650), (20, 1066825), (25, 853460), (50, 426730), (100, 213365), (125, 170692), (139, 153500), (250, 85346), (278, 76750), (307, 69500), (500, 42673), (556, 38375), (614, 34750), (695, 30700), (1228, 17375), (1390, 15350), (1535, 13900), (2780, 7675), (3070, 6950), (3475, 6140)]