20172400

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:131

約数の個数: 120

約数和(自身を含む): 52585920

約数和(自身を除く): 32413520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 37, 40, 47, 50, 58, 74, 80, 94, 100, 116, 145, 148, 185, 188, 200, 232, 235, 290, 296, 370, 376, 400, 464, 470, 580, 592, 725, 740, 752, 925, 940, 1073, 1160, 1175, 1363, 1450, 1480, 1739, 1850, 1880, 2146, 2320, 2350, 2726, 2900, 2960, 3478, 3700, 3760, 4292, 4700, 5365, 5452, 5800, 6815, 6956, 7400, 8584, 8695, 9400, 10730, 10904, 11600, 13630, 13912, 14800, 17168, 17390, 18800, 21460, 21808, 26825, 27260, 27824, 34075, 34780, 42920, 43475, 50431, 53650, 54520, 68150, 69560, 85840, 86950, 100862, 107300, 109040, 136300, 139120, 173900, 201724, 214600, 252155, 272600, 347800, 403448, 429200, 504310, 545200, 695600, 806896, 1008620, 1260775, 2017240, 2521550, 4034480, 5043100, 10086200, 20172400]

約数ペア:

[(1, 20172400), (2, 10086200), (4, 5043100), (5, 4034480), (8, 2521550), (10, 2017240), (16, 1260775), (20, 1008620), (25, 806896), (29, 695600), (37, 545200), (40, 504310), (47, 429200), (50, 403448), (58, 347800), (74, 272600), (80, 252155), (94, 214600), (100, 201724), (116, 173900), (145, 139120), (148, 136300), (185, 109040), (188, 107300), (200, 100862), (232, 86950), (235, 85840), (290, 69560), (296, 68150), (370, 54520), (376, 53650), (400, 50431), (464, 43475), (470, 42920), (580, 34780), (592, 34075), (725, 27824), (740, 27260), (752, 26825), (925, 21808), (940, 21460), (1073, 18800), (1160, 17390), (1175, 17168), (1363, 14800), (1450, 13912), (1480, 13630), (1739, 11600), (1850, 10904), (1880, 10730), (2146, 9400), (2320, 8695), (2350, 8584), (2726, 7400), (2900, 6956), (2960, 6815), (3478, 5800), (3700, 5452), (3760, 5365), (4292, 4700)]