20201720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{937}}^1$

素因数の和:973

約数の個数: 96

約数和(自身を含む): 57743280

約数和(自身を除く): 37541560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 616, 770, 937, 980, 1078, 1540, 1874, 1960, 2156, 2695, 3080, 3748, 4312, 4685, 5390, 6559, 7496, 9370, 10307, 10780, 13118, 18740, 20614, 21560, 26236, 32795, 37480, 41228, 45913, 51535, 52472, 65590, 72149, 82456, 91826, 103070, 131180, 144298, 183652, 206140, 229565, 262360, 288596, 360745, 367304, 412280, 459130, 505043, 577192, 721490, 918260, 1010086, 1442980, 1836520, 2020172, 2525215, 2885960, 4040344, 5050430, 10100860, 20201720]

約数ペア:

[(1, 20201720), (2, 10100860), (4, 5050430), (5, 4040344), (7, 2885960), (8, 2525215), (10, 2020172), (11, 1836520), (14, 1442980), (20, 1010086), (22, 918260), (28, 721490), (35, 577192), (40, 505043), (44, 459130), (49, 412280), (55, 367304), (56, 360745), (70, 288596), (77, 262360), (88, 229565), (98, 206140), (110, 183652), (140, 144298), (154, 131180), (196, 103070), (220, 91826), (245, 82456), (280, 72149), (308, 65590), (385, 52472), (392, 51535), (440, 45913), (490, 41228), (539, 37480), (616, 32795), (770, 26236), (937, 21560), (980, 20614), (1078, 18740), (1540, 13118), (1874, 10780), (1960, 10307), (2156, 9370), (2695, 7496), (3080, 6559), (3748, 5390), (4312, 4685)]