20131281

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{719}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 12009519

約数列:

[1, 3, 9, 17, 27, 51, 61, 153, 183, 459, 549, 719, 1037, 1647, 2157, 3111, 6471, 9333, 12223, 19413, 27999, 36669, 43859, 110007, 131577, 330021, 394731, 745603, 1184193, 2236809, 6710427, 20131281]

約数ペア:

[(1, 20131281), (3, 6710427), (9, 2236809), (17, 1184193), (27, 745603), (51, 394731), (61, 330021), (153, 131577), (183, 110007), (459, 43859), (549, 36669), (719, 27999), (1037, 19413), (1647, 12223), (2157, 9333), (3111, 6471)]