81361952

素因数分解:

$2^5\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2731}}^1$

素因数の和:2774

約数の個数: 72

約数和(自身を含む): 196212240

約数和(自身を除く): 114850288

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 49, 56, 76, 98, 112, 133, 152, 196, 224, 266, 304, 392, 532, 608, 784, 931, 1064, 1568, 1862, 2128, 2731, 3724, 4256, 5462, 7448, 10924, 14896, 19117, 21848, 29792, 38234, 43696, 51889, 76468, 87392, 103778, 133819, 152936, 207556, 267638, 305872, 363223, 415112, 535276, 611744, 726446, 830224, 1070552, 1452892, 1660448, 2141104, 2542561, 2905784, 4282208, 5085122, 5811568, 10170244, 11623136, 20340488, 40680976, 81361952]

約数ペア:

[(1, 81361952), (2, 40680976), (4, 20340488), (7, 11623136), (8, 10170244), (14, 5811568), (16, 5085122), (19, 4282208), (28, 2905784), (32, 2542561), (38, 2141104), (49, 1660448), (56, 1452892), (76, 1070552), (98, 830224), (112, 726446), (133, 611744), (152, 535276), (196, 415112), (224, 363223), (266, 305872), (304, 267638), (392, 207556), (532, 152936), (608, 133819), (784, 103778), (931, 87392), (1064, 76468), (1568, 51889), (1862, 43696), (2128, 38234), (2731, 29792), (3724, 21848), (4256, 19117), (5462, 14896), (7448, 10924)]