19710855

素因数分解:

$3^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{677}}^1$

素因数の和:1335

約数の個数: 24

約数和(自身を含む): 34268832

約数和(自身を除く): 14557977

約数列:

[1, 3, 5, 9, 15, 45, 647, 677, 1941, 2031, 3235, 3385, 5823, 6093, 9705, 10155, 29115, 30465, 438019, 1314057, 2190095, 3942171, 6570285, 19710855]

約数ペア:

[(1, 19710855), (3, 6570285), (5, 3942171), (9, 2190095), (15, 1314057), (45, 438019), (647, 30465), (677, 29115), (1941, 10155), (2031, 9705), (3235, 6093), (3385, 5823)]