201721000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{263}}^1$

素因数の和:356

約数の個数: 128

約数和(自身を含む): 518918400

約数和(自身を除く): 317197400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 59, 65, 100, 104, 118, 125, 130, 200, 236, 250, 260, 263, 295, 325, 472, 500, 520, 526, 590, 650, 767, 1000, 1052, 1180, 1300, 1315, 1475, 1534, 1625, 2104, 2360, 2600, 2630, 2950, 3068, 3250, 3419, 3835, 5260, 5900, 6136, 6500, 6575, 6838, 7375, 7670, 10520, 11800, 13000, 13150, 13676, 14750, 15340, 15517, 17095, 19175, 26300, 27352, 29500, 30680, 31034, 32875, 34190, 38350, 52600, 59000, 62068, 65750, 68380, 76700, 77585, 85475, 95875, 124136, 131500, 136760, 153400, 155170, 170950, 191750, 201721, 263000, 310340, 341900, 383500, 387925, 403442, 427375, 620680, 683800, 767000, 775850, 806884, 854750, 1008605, 1551700, 1613768, 1709500, 1939625, 2017210, 3103400, 3419000, 3879250, 4034420, 5043025, 7758500, 8068840, 10086050, 15517000, 20172100, 25215125, 40344200, 50430250, 100860500, 201721000]

約数ペア:

[(1, 201721000), (2, 100860500), (4, 50430250), (5, 40344200), (8, 25215125), (10, 20172100), (13, 15517000), (20, 10086050), (25, 8068840), (26, 7758500), (40, 5043025), (50, 4034420), (52, 3879250), (59, 3419000), (65, 3103400), (100, 2017210), (104, 1939625), (118, 1709500), (125, 1613768), (130, 1551700), (200, 1008605), (236, 854750), (250, 806884), (260, 775850), (263, 767000), (295, 683800), (325, 620680), (472, 427375), (500, 403442), (520, 387925), (526, 383500), (590, 341900), (650, 310340), (767, 263000), (1000, 201721), (1052, 191750), (1180, 170950), (1300, 155170), (1315, 153400), (1475, 136760), (1534, 131500), (1625, 124136), (2104, 95875), (2360, 85475), (2600, 77585), (2630, 76700), (2950, 68380), (3068, 65750), (3250, 62068), (3419, 59000), (3835, 52600), (5260, 38350), (5900, 34190), (6136, 32875), (6500, 31034), (6575, 30680), (6838, 29500), (7375, 27352), (7670, 26300), (10520, 19175), (11800, 17095), (13000, 15517), (13150, 15340), (13676, 14750)]