20586500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:246

約数の個数: 96

約数和(自身を含む): 51891840

約数和(自身を除く): 31305340

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 125, 190, 197, 209, 220, 250, 275, 380, 394, 418, 475, 500, 550, 788, 836, 950, 985, 1045, 1100, 1375, 1900, 1970, 2090, 2167, 2375, 2750, 3743, 3940, 4180, 4334, 4750, 4925, 5225, 5500, 7486, 8668, 9500, 9850, 10450, 10835, 14972, 18715, 19700, 20900, 21670, 24625, 26125, 37430, 41173, 43340, 49250, 52250, 54175, 74860, 82346, 93575, 98500, 104500, 108350, 164692, 187150, 205865, 216700, 270875, 374300, 411730, 467875, 541750, 823460, 935750, 1029325, 1083500, 1871500, 2058650, 4117300, 5146625, 10293250, 20586500]

約数ペア:

[(1, 20586500), (2, 10293250), (4, 5146625), (5, 4117300), (10, 2058650), (11, 1871500), (19, 1083500), (20, 1029325), (22, 935750), (25, 823460), (38, 541750), (44, 467875), (50, 411730), (55, 374300), (76, 270875), (95, 216700), (100, 205865), (110, 187150), (125, 164692), (190, 108350), (197, 104500), (209, 98500), (220, 93575), (250, 82346), (275, 74860), (380, 54175), (394, 52250), (418, 49250), (475, 43340), (500, 41173), (550, 37430), (788, 26125), (836, 24625), (950, 21670), (985, 20900), (1045, 19700), (1100, 18715), (1375, 14972), (1900, 10835), (1970, 10450), (2090, 9850), (2167, 9500), (2375, 8668), (2750, 7486), (3743, 5500), (3940, 5225), (4180, 4925), (4334, 4750)]