81211984

素因数分解:

$2^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{11887}}^1$

素因数の和:11963

約数の個数: 40

約数和(自身を含む): 182789888

約数和(自身を除く): 101577904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 61, 112, 122, 244, 427, 488, 854, 976, 1708, 3416, 6832, 11887, 23774, 47548, 83209, 95096, 166418, 190192, 332836, 665672, 725107, 1331344, 1450214, 2900428, 5075749, 5800856, 10151498, 11601712, 20302996, 40605992, 81211984]

約数ペア:

[(1, 81211984), (2, 40605992), (4, 20302996), (7, 11601712), (8, 10151498), (14, 5800856), (16, 5075749), (28, 2900428), (56, 1450214), (61, 1331344), (112, 725107), (122, 665672), (244, 332836), (427, 190192), (488, 166418), (854, 95096), (976, 83209), (1708, 47548), (3416, 23774), (6832, 11887)]