21079370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12473}}^1$

素因数の和:12506

約数の個数: 24

約数和(自身を含む): 41089356

約数和(自身を除く): 20009986

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12473, 24946, 62365, 124730, 162149, 324298, 810745, 1621490, 2107937, 4215874, 10539685, 21079370]

約数ペア:

[(1, 21079370), (2, 10539685), (5, 4215874), (10, 2107937), (13, 1621490), (26, 810745), (65, 324298), (130, 162149), (169, 124730), (338, 62365), (845, 24946), (1690, 12473)]