21659790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31391}}^1$

素因数の和:31424

約数の個数: 32

約数和(自身を含む): 54245376

約数和(自身を除く): 32585586

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 31391, 62782, 94173, 156955, 188346, 313910, 470865, 721993, 941730, 1443986, 2165979, 3609965, 4331958, 7219930, 10829895, 21659790]

約数ペア:

[(1, 21659790), (2, 10829895), (3, 7219930), (5, 4331958), (6, 3609965), (10, 2165979), (15, 1443986), (23, 941730), (30, 721993), (46, 470865), (69, 313910), (115, 188346), (138, 156955), (230, 94173), (345, 62782), (690, 31391)]