20471000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1861}}^1$

素因数の和:1893

約数の個数: 64

約数和(自身を含む): 52284960

約数和(自身を除く): 31813960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1375, 1861, 2200, 2750, 3722, 5500, 7444, 9305, 11000, 14888, 18610, 20471, 37220, 40942, 46525, 74440, 81884, 93050, 102355, 163768, 186100, 204710, 232625, 372200, 409420, 465250, 511775, 818840, 930500, 1023550, 1861000, 2047100, 2558875, 4094200, 5117750, 10235500, 20471000]

約数ペア:

[(1, 20471000), (2, 10235500), (4, 5117750), (5, 4094200), (8, 2558875), (10, 2047100), (11, 1861000), (20, 1023550), (22, 930500), (25, 818840), (40, 511775), (44, 465250), (50, 409420), (55, 372200), (88, 232625), (100, 204710), (110, 186100), (125, 163768), (200, 102355), (220, 93050), (250, 81884), (275, 74440), (440, 46525), (500, 40942), (550, 37220), (1000, 20471), (1100, 18610), (1375, 14888), (1861, 11000), (2200, 9305), (2750, 7444), (3722, 5500)]