21063136

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1307

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 24296864

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 68, 124, 136, 248, 272, 496, 527, 544, 992, 1054, 1249, 2108, 2498, 4216, 4996, 8432, 9992, 16864, 19984, 21233, 38719, 39968, 42466, 77438, 84932, 154876, 169864, 309752, 339728, 619504, 658223, 679456, 1239008, 1316446, 2632892, 5265784, 10531568, 21063136]

約数ペア:

[(1, 21063136), (2, 10531568), (4, 5265784), (8, 2632892), (16, 1316446), (17, 1239008), (31, 679456), (32, 658223), (34, 619504), (62, 339728), (68, 309752), (124, 169864), (136, 154876), (248, 84932), (272, 77438), (496, 42466), (527, 39968), (544, 38719), (992, 21233), (1054, 19984), (1249, 16864), (2108, 9992), (2498, 8432), (4216, 4996)]