20828416

素因数分解:

$2^8\times 7^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 48565440

約数和(自身を除く): 27737024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 59, 64, 112, 118, 128, 197, 224, 236, 256, 394, 413, 448, 472, 788, 826, 896, 944, 1379, 1576, 1652, 1792, 1888, 2758, 3152, 3304, 3776, 5516, 6304, 6608, 7552, 11032, 11623, 12608, 13216, 15104, 22064, 23246, 25216, 26432, 44128, 46492, 50432, 52864, 81361, 88256, 92984, 105728, 162722, 176512, 185968, 325444, 353024, 371936, 650888, 743872, 1301776, 1487744, 2603552, 2975488, 5207104, 10414208, 20828416]

約数ペア:

[(1, 20828416), (2, 10414208), (4, 5207104), (7, 2975488), (8, 2603552), (14, 1487744), (16, 1301776), (28, 743872), (32, 650888), (56, 371936), (59, 353024), (64, 325444), (112, 185968), (118, 176512), (128, 162722), (197, 105728), (224, 92984), (236, 88256), (256, 81361), (394, 52864), (413, 50432), (448, 46492), (472, 44128), (788, 26432), (826, 25216), (896, 23246), (944, 22064), (1379, 15104), (1576, 13216), (1652, 12608), (1792, 11623), (1888, 11032), (2758, 7552), (3152, 6608), (3304, 6304), (3776, 5516)]