21647728

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{16301}}^1$

素因数の和:16392

約数の個数: 20

約数和(自身を含む): 42450408

約数和(自身を除く): 20802680

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 16301, 32602, 65204, 130408, 260816, 1352983, 2705966, 5411932, 10823864, 21647728]

約数ペア:

[(1, 21647728), (2, 10823864), (4, 5411932), (8, 2705966), (16, 1352983), (83, 260816), (166, 130408), (332, 65204), (664, 32602), (1328, 16301)]