388452400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{19819}}^1$

素因数の和:19851

約数の個数: 90

約数和(自身を含む): 1085680140

約数和(自身を除く): 697227740

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4900, 9800, 19600, 19819, 39638, 79276, 99095, 138733, 158552, 198190, 277466, 317104, 396380, 495475, 554932, 693665, 792760, 971131, 990950, 1109864, 1387330, 1585520, 1942262, 1981900, 2219728, 2774660, 3468325, 3884524, 3963800, 4855655, 5549320, 6936650, 7769048, 7927600, 9711310, 11098640, 13873300, 15538096, 19422620, 24278275, 27746600, 38845240, 48556550, 55493200, 77690480, 97113100, 194226200, 388452400]

約数ペア:

[(1, 388452400), (2, 194226200), (4, 97113100), (5, 77690480), (7, 55493200), (8, 48556550), (10, 38845240), (14, 27746600), (16, 24278275), (20, 19422620), (25, 15538096), (28, 13873300), (35, 11098640), (40, 9711310), (49, 7927600), (50, 7769048), (56, 6936650), (70, 5549320), (80, 4855655), (98, 3963800), (100, 3884524), (112, 3468325), (140, 2774660), (175, 2219728), (196, 1981900), (200, 1942262), (245, 1585520), (280, 1387330), (350, 1109864), (392, 990950), (400, 971131), (490, 792760), (560, 693665), (700, 554932), (784, 495475), (980, 396380), (1225, 317104), (1400, 277466), (1960, 198190), (2450, 158552), (2800, 138733), (3920, 99095), (4900, 79276), (9800, 39638), (19600, 19819)]