81831760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14407}}^1$

素因数の和:14491

約数の個数: 40

約数和(自身を含む): 192951936

約数和(自身を除く): 111120176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 14407, 28814, 57628, 72035, 115256, 144070, 230512, 288140, 576280, 1022897, 1152560, 2045794, 4091588, 5114485, 8183176, 10228970, 16366352, 20457940, 40915880, 81831760]

約数ペア:

[(1, 81831760), (2, 40915880), (4, 20457940), (5, 16366352), (8, 10228970), (10, 8183176), (16, 5114485), (20, 4091588), (40, 2045794), (71, 1152560), (80, 1022897), (142, 576280), (284, 288140), (355, 230512), (568, 144070), (710, 115256), (1136, 72035), (1420, 57628), (2840, 28814), (5680, 14407)]