81961376

素因数分解:

$2^5\times 7^1\times {\mathrm{367}}^1\times {\mathrm{997}}^1$

素因数の和:1381

約数の個数: 48

約数和(自身を含む): 185101056

約数和(自身を除く): 103139680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 367, 734, 997, 1468, 1994, 2569, 2936, 3988, 5138, 5872, 6979, 7976, 10276, 11744, 13958, 15952, 20552, 27916, 31904, 41104, 55832, 82208, 111664, 223328, 365899, 731798, 1463596, 2561293, 2927192, 5122586, 5854384, 10245172, 11708768, 20490344, 40980688, 81961376]

約数ペア:

[(1, 81961376), (2, 40980688), (4, 20490344), (7, 11708768), (8, 10245172), (14, 5854384), (16, 5122586), (28, 2927192), (32, 2561293), (56, 1463596), (112, 731798), (224, 365899), (367, 223328), (734, 111664), (997, 82208), (1468, 55832), (1994, 41104), (2569, 31904), (2936, 27916), (3988, 20552), (5138, 15952), (5872, 13958), (6979, 11744), (7976, 10276)]