21904090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{997}}^1$

素因数の和:1043

約数の個数: 32

約数和(自身を含む): 42754320

約数和(自身を除く): 20850230

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 997, 1690, 1994, 2197, 4394, 4985, 9970, 10985, 12961, 21970, 25922, 64805, 129610, 168493, 336986, 842465, 1684930, 2190409, 4380818, 10952045, 21904090]

約数ペア:

[(1, 21904090), (2, 10952045), (5, 4380818), (10, 2190409), (13, 1684930), (26, 842465), (65, 336986), (130, 168493), (169, 129610), (338, 64805), (845, 25922), (997, 21970), (1690, 12961), (1994, 10985), (2197, 9970), (4394, 4985)]