21487228

素因数分解:

$2^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1933}}^1$

素因数の和:2341

約数の個数: 24

約数和(自身を含む): 43104992

約数和(自身を除く): 21617764

約数列:

[1, 2, 4, 7, 14, 28, 397, 794, 1588, 1933, 2779, 3866, 5558, 7732, 11116, 13531, 27062, 54124, 767401, 1534802, 3069604, 5371807, 10743614, 21487228]

約数ペア:

[(1, 21487228), (2, 10743614), (4, 5371807), (7, 3069604), (14, 1534802), (28, 767401), (397, 54124), (794, 27062), (1588, 13531), (1933, 11116), (2779, 7732), (3866, 5558)]