20530160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{601}}^1$

素因数の和:682

約数の個数: 80

約数和(自身を含む): 55538112

約数和(自身を除く): 35007952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 601, 610, 854, 976, 1202, 1220, 1708, 2135, 2404, 2440, 3005, 3416, 4207, 4270, 4808, 4880, 6010, 6832, 8414, 8540, 9616, 12020, 16828, 17080, 21035, 24040, 33656, 34160, 36661, 42070, 48080, 67312, 73322, 84140, 146644, 168280, 183305, 256627, 293288, 336560, 366610, 513254, 586576, 733220, 1026508, 1283135, 1466440, 2053016, 2566270, 2932880, 4106032, 5132540, 10265080, 20530160]

約数ペア:

[(1, 20530160), (2, 10265080), (4, 5132540), (5, 4106032), (7, 2932880), (8, 2566270), (10, 2053016), (14, 1466440), (16, 1283135), (20, 1026508), (28, 733220), (35, 586576), (40, 513254), (56, 366610), (61, 336560), (70, 293288), (80, 256627), (112, 183305), (122, 168280), (140, 146644), (244, 84140), (280, 73322), (305, 67312), (427, 48080), (488, 42070), (560, 36661), (601, 34160), (610, 33656), (854, 24040), (976, 21035), (1202, 17080), (1220, 16828), (1708, 12020), (2135, 9616), (2404, 8540), (2440, 8414), (3005, 6832), (3416, 6010), (4207, 4880), (4270, 4808)]