21278049395

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{661}}^1\times {\mathrm{109121}}^1$

素因数の和:109846

約数の個数: 16

約数和(自身を含む): 26005955040

約数和(自身を除く): 4727905645

約数列:

[1, 5, 59, 295, 661, 3305, 38999, 109121, 194995, 545605, 6438139, 32190695, 72128981, 360644905, 4255609879, 21278049395]

約数ペア:

[(1, 21278049395), (5, 4255609879), (59, 360644905), (295, 72128981), (661, 32190695), (3305, 6438139), (38999, 545605), (109121, 194995)]