21406112

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7351}}^1$

素因数の和:7381

約数の個数: 48

約数和(自身を含む): 51875712

約数和(自身を除く): 30469600

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7351, 14702, 29404, 51457, 58808, 95563, 102914, 117616, 191126, 205828, 235232, 382252, 411656, 668941, 764504, 823312, 1337882, 1529008, 1646624, 2675764, 3058016, 5351528, 10703056, 21406112]

約数ペア:

[(1, 21406112), (2, 10703056), (4, 5351528), (7, 3058016), (8, 2675764), (13, 1646624), (14, 1529008), (16, 1337882), (26, 823312), (28, 764504), (32, 668941), (52, 411656), (56, 382252), (91, 235232), (104, 205828), (112, 191126), (182, 117616), (208, 102914), (224, 95563), (364, 58808), (416, 51457), (728, 29404), (1456, 14702), (2912, 7351)]