20417085

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2053}}^1$

素因数の和:2094

約数の個数: 48

約数和(自身を含む): 40373424

約数和(自身を除く): 19956339

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2053, 3315, 6159, 9945, 10265, 18477, 26689, 30795, 34901, 80067, 92385, 104703, 133445, 174505, 240201, 314109, 400335, 453713, 523515, 1201005, 1361139, 1570545, 2268565, 4083417, 6805695, 20417085]

約数ペア:

[(1, 20417085), (3, 6805695), (5, 4083417), (9, 2268565), (13, 1570545), (15, 1361139), (17, 1201005), (39, 523515), (45, 453713), (51, 400335), (65, 314109), (85, 240201), (117, 174505), (153, 133445), (195, 104703), (221, 92385), (255, 80067), (585, 34901), (663, 30795), (765, 26689), (1105, 18477), (1989, 10265), (2053, 9945), (3315, 6159)]