21480885

素因数分解:

$3^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1031}}^1$

素因数の和:1505

約数の個数: 24

約数和(自身を含む): 37350144

約数和(自身を除く): 15869259

約数列:

[1, 3, 5, 9, 15, 45, 463, 1031, 1389, 2315, 3093, 4167, 5155, 6945, 9279, 15465, 20835, 46395, 477353, 1432059, 2386765, 4296177, 7160295, 21480885]

約数ペア:

[(1, 21480885), (3, 7160295), (5, 4296177), (9, 2386765), (15, 1432059), (45, 477353), (463, 46395), (1031, 20835), (1389, 15465), (2315, 9279), (3093, 6945), (4167, 5155)]