21000209065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{8879581}}^1$

素因数の和:8879640

約数の個数: 16

約数和(自身を含む): 28130515776

約数和(自身を除く): 7130306711

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 8879581, 44397905, 97675391, 381821983, 488376955, 1909109915, 4200041813, 21000209065]

約数ペア:

[(1, 21000209065), (5, 4200041813), (11, 1909109915), (43, 488376955), (55, 381821983), (215, 97675391), (473, 44397905), (2365, 8879581)]