81126920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 220147200

約数和(自身を除く): 139020280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 97, 103, 116, 140, 145, 194, 203, 206, 232, 280, 290, 388, 406, 412, 485, 515, 580, 679, 721, 776, 812, 824, 970, 1015, 1030, 1160, 1358, 1442, 1624, 1940, 2030, 2060, 2716, 2813, 2884, 2987, 3395, 3605, 3880, 4060, 4120, 5432, 5626, 5768, 5974, 6790, 7210, 8120, 9991, 11252, 11948, 13580, 14065, 14420, 14935, 19691, 19982, 20909, 22504, 23896, 27160, 28130, 28840, 29870, 39382, 39964, 41818, 49955, 56260, 59740, 69937, 78764, 79928, 83636, 98455, 99910, 104545, 112520, 119480, 139874, 157528, 167272, 196910, 199820, 209090, 279748, 289739, 349685, 393820, 399640, 418180, 559496, 579478, 699370, 787640, 836360, 1158956, 1398740, 1448695, 2028173, 2317912, 2797480, 2897390, 4056346, 5794780, 8112692, 10140865, 11589560, 16225384, 20281730, 40563460, 81126920]

約数ペア:

[(1, 81126920), (2, 40563460), (4, 20281730), (5, 16225384), (7, 11589560), (8, 10140865), (10, 8112692), (14, 5794780), (20, 4056346), (28, 2897390), (29, 2797480), (35, 2317912), (40, 2028173), (56, 1448695), (58, 1398740), (70, 1158956), (97, 836360), (103, 787640), (116, 699370), (140, 579478), (145, 559496), (194, 418180), (203, 399640), (206, 393820), (232, 349685), (280, 289739), (290, 279748), (388, 209090), (406, 199820), (412, 196910), (485, 167272), (515, 157528), (580, 139874), (679, 119480), (721, 112520), (776, 104545), (812, 99910), (824, 98455), (970, 83636), (1015, 79928), (1030, 78764), (1160, 69937), (1358, 59740), (1442, 56260), (1624, 49955), (1940, 41818), (2030, 39964), (2060, 39382), (2716, 29870), (2813, 28840), (2884, 28130), (2987, 27160), (3395, 23896), (3605, 22504), (3880, 20909), (4060, 19982), (4120, 19691), (5432, 14935), (5626, 14420), (5768, 14065), (5974, 13580), (6790, 11948), (7210, 11252), (8120, 9991)]