21409970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{125941}}^1$

素因数の和:125965

約数の個数: 16

約数和(自身を含む): 40805208

約数和(自身を除く): 19395238

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 125941, 251882, 629705, 1259410, 2140997, 4281994, 10704985, 21409970]

約数ペア:

[(1, 21409970), (2, 10704985), (5, 4281994), (10, 2140997), (17, 1259410), (34, 629705), (85, 251882), (170, 125941)]