21152828

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{1123}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 39371472

約数和(自身を除く): 18218644

約数列:

[1, 2, 4, 17, 34, 68, 277, 554, 1108, 1123, 2246, 4492, 4709, 9418, 18836, 19091, 38182, 76364, 311071, 622142, 1244284, 5288207, 10576414, 21152828]

約数ペア:

[(1, 21152828), (2, 10576414), (4, 5288207), (17, 1244284), (34, 622142), (68, 311071), (277, 76364), (554, 38182), (1108, 19091), (1123, 18836), (2246, 9418), (4492, 4709)]