20555500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{839}}^1$

素因数の和:872

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 31729460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 700, 839, 875, 980, 1225, 1678, 1750, 2450, 3356, 3500, 4195, 4900, 5873, 6125, 8390, 11746, 12250, 16780, 20975, 23492, 24500, 29365, 41111, 41950, 58730, 82222, 83900, 104875, 117460, 146825, 164444, 205555, 209750, 293650, 411110, 419500, 587300, 734125, 822220, 1027775, 1468250, 2055550, 2936500, 4111100, 5138875, 10277750, 20555500]

約数ペア:

[(1, 20555500), (2, 10277750), (4, 5138875), (5, 4111100), (7, 2936500), (10, 2055550), (14, 1468250), (20, 1027775), (25, 822220), (28, 734125), (35, 587300), (49, 419500), (50, 411110), (70, 293650), (98, 209750), (100, 205555), (125, 164444), (140, 146825), (175, 117460), (196, 104875), (245, 83900), (250, 82222), (350, 58730), (490, 41950), (500, 41111), (700, 29365), (839, 24500), (875, 23492), (980, 20975), (1225, 16780), (1678, 12250), (1750, 11746), (2450, 8390), (3356, 6125), (3500, 5873), (4195, 4900)]