20947808

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5501}}^1$

素因数の和:5535

約数の個数: 48

約数和(自身を含む): 49914144

約数和(自身を除く): 28966336

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5501, 11002, 22004, 38507, 44008, 77014, 88016, 93517, 154028, 176032, 187034, 308056, 374068, 616112, 654619, 748136, 1232224, 1309238, 1496272, 2618476, 2992544, 5236952, 10473904, 20947808]

約数ペア:

[(1, 20947808), (2, 10473904), (4, 5236952), (7, 2992544), (8, 2618476), (14, 1496272), (16, 1309238), (17, 1232224), (28, 748136), (32, 654619), (34, 616112), (56, 374068), (68, 308056), (112, 187034), (119, 176032), (136, 154028), (224, 93517), (238, 88016), (272, 77014), (476, 44008), (544, 38507), (952, 22004), (1904, 11002), (3808, 5501)]