21551325

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16903}}^1$

素因数の和:16933

約数の個数: 24

約数和(自身を含む): 37729728

約数和(自身を除く): 16178403

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16903, 50709, 84515, 253545, 287351, 422575, 862053, 1267725, 1436755, 4310265, 7183775, 21551325]

約数ペア:

[(1, 21551325), (3, 7183775), (5, 4310265), (15, 1436755), (17, 1267725), (25, 862053), (51, 422575), (75, 287351), (85, 253545), (255, 84515), (425, 50709), (1275, 16903)]