21750905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 30907008

約数和(自身を除く): 9156103

約数列:

[1, 5, 11, 17, 43, 55, 85, 187, 215, 473, 541, 731, 935, 2365, 2705, 3655, 5951, 8041, 9197, 23263, 29755, 40205, 45985, 101167, 116315, 255893, 395471, 505835, 1279465, 1977355, 4350181, 21750905]

約数ペア:

[(1, 21750905), (5, 4350181), (11, 1977355), (17, 1279465), (43, 505835), (55, 395471), (85, 255893), (187, 116315), (215, 101167), (473, 45985), (541, 40205), (731, 29755), (935, 23263), (2365, 9197), (2705, 8041), (3655, 5951)]