20117300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1041

約数の個数: 72

約数和(自身を含む): 51663360

約数和(自身を除く): 31546060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 991, 1015, 1450, 1982, 2030, 2900, 3964, 4060, 4955, 5075, 6937, 9910, 10150, 13874, 19820, 20300, 24775, 27748, 28739, 34685, 49550, 57478, 69370, 99100, 114956, 138740, 143695, 173425, 201173, 287390, 346850, 402346, 574780, 693700, 718475, 804692, 1005865, 1436950, 2011730, 2873900, 4023460, 5029325, 10058650, 20117300]

約数ペア:

[(1, 20117300), (2, 10058650), (4, 5029325), (5, 4023460), (7, 2873900), (10, 2011730), (14, 1436950), (20, 1005865), (25, 804692), (28, 718475), (29, 693700), (35, 574780), (50, 402346), (58, 346850), (70, 287390), (100, 201173), (116, 173425), (140, 143695), (145, 138740), (175, 114956), (203, 99100), (290, 69370), (350, 57478), (406, 49550), (580, 34685), (700, 28739), (725, 27748), (812, 24775), (991, 20300), (1015, 19820), (1450, 13874), (1982, 10150), (2030, 9910), (2900, 6937), (3964, 5075), (4060, 4955)]