21103911

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 31370976

約数和(自身を除く): 10267065

約数列:

[1, 3, 9, 53, 151, 159, 293, 453, 477, 879, 1359, 2637, 8003, 15529, 24009, 44243, 46587, 72027, 132729, 139761, 398187, 2344879, 7034637, 21103911]

約数ペア:

[(1, 21103911), (3, 7034637), (9, 2344879), (53, 398187), (151, 139761), (159, 132729), (293, 72027), (453, 46587), (477, 44243), (879, 24009), (1359, 15529), (2637, 8003)]