21542738

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 37977984

約数和(自身を除く): 16435246

約数列:

[1, 2, 7, 14, 73, 107, 146, 197, 214, 394, 511, 749, 1022, 1379, 1498, 2758, 7811, 14381, 15622, 21079, 28762, 42158, 54677, 100667, 109354, 147553, 201334, 295106, 1538767, 3077534, 10771369, 21542738]

約数ペア:

[(1, 21542738), (2, 10771369), (7, 3077534), (14, 1538767), (73, 295106), (107, 201334), (146, 147553), (197, 109354), (214, 100667), (394, 54677), (511, 42158), (749, 28762), (1022, 21079), (1379, 15622), (1498, 14381), (2758, 7811)]