19915240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21647}}^1$

素因数の和:21681

約数の個数: 32

約数和(自身を含む): 46759680

約数和(自身を除く): 26844440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 21647, 43294, 86588, 108235, 173176, 216470, 432940, 497881, 865880, 995762, 1991524, 2489405, 3983048, 4978810, 9957620, 19915240]

約数ペア:

[(1, 19915240), (2, 9957620), (4, 4978810), (5, 3983048), (8, 2489405), (10, 1991524), (20, 995762), (23, 865880), (40, 497881), (46, 432940), (92, 216470), (115, 173176), (184, 108235), (230, 86588), (460, 43294), (920, 21647)]