20218272500

素因数分解:

$2^2\times 5^4\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{613}}^1$

素因数の和:883

約数の個数: 120

約数和(自身を含む): 45114558720

約数和(自身を除く): 24896286220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 167, 250, 316, 334, 395, 500, 613, 625, 668, 790, 835, 1226, 1250, 1580, 1670, 1975, 2452, 2500, 3065, 3340, 3950, 4175, 6130, 7900, 8350, 9875, 12260, 13193, 15325, 16700, 19750, 20875, 26386, 30650, 39500, 41750, 48427, 49375, 52772, 61300, 65965, 76625, 83500, 96854, 98750, 102371, 104375, 131930, 153250, 193708, 197500, 204742, 208750, 242135, 263860, 306500, 329825, 383125, 409484, 417500, 484270, 511855, 659650, 766250, 968540, 1023710, 1210675, 1319300, 1532500, 1649125, 2047420, 2421350, 2559275, 3298250, 4842700, 5118550, 6053375, 6596500, 8087309, 8245625, 10237100, 12106750, 12796375, 16174618, 16491250, 24213500, 25592750, 30266875, 32349236, 32982500, 40436545, 51185500, 60533750, 63981875, 80873090, 121067500, 127963750, 161746180, 202182725, 255927500, 404365450, 808730900, 1010913625, 2021827250, 4043654500, 5054568125, 10109136250, 20218272500]

約数ペア:

[(1, 20218272500), (2, 10109136250), (4, 5054568125), (5, 4043654500), (10, 2021827250), (20, 1010913625), (25, 808730900), (50, 404365450), (79, 255927500), (100, 202182725), (125, 161746180), (158, 127963750), (167, 121067500), (250, 80873090), (316, 63981875), (334, 60533750), (395, 51185500), (500, 40436545), (613, 32982500), (625, 32349236), (668, 30266875), (790, 25592750), (835, 24213500), (1226, 16491250), (1250, 16174618), (1580, 12796375), (1670, 12106750), (1975, 10237100), (2452, 8245625), (2500, 8087309), (3065, 6596500), (3340, 6053375), (3950, 5118550), (4175, 4842700), (6130, 3298250), (7900, 2559275), (8350, 2421350), (9875, 2047420), (12260, 1649125), (13193, 1532500), (15325, 1319300), (16700, 1210675), (19750, 1023710), (20875, 968540), (26386, 766250), (30650, 659650), (39500, 511855), (41750, 484270), (48427, 417500), (49375, 409484), (52772, 383125), (61300, 329825), (65965, 306500), (76625, 263860), (83500, 242135), (96854, 208750), (98750, 204742), (102371, 197500), (104375, 193708), (131930, 153250)]