28001331

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{1249}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 42120000

約数和(自身を除く): 14118669

約数列:

[1, 3, 9, 47, 53, 141, 159, 423, 477, 1249, 2491, 3747, 7473, 11241, 22419, 58703, 66197, 176109, 198591, 528327, 595773, 3111259, 9333777, 28001331]

約数ペア:

[(1, 28001331), (3, 9333777), (9, 3111259), (47, 595773), (53, 528327), (141, 198591), (159, 176109), (423, 66197), (477, 58703), (1249, 22419), (2491, 11241), (3747, 7473)]