81347120

素因数分解:

$2^4\times 5^1\times {\mathrm{1016839}}^1$

素因数の和:1016852

約数の個数: 20

約数和(自身を含む): 189132240

約数和(自身を除く): 107785120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1016839, 2033678, 4067356, 5084195, 8134712, 10168390, 16269424, 20336780, 40673560, 81347120]

約数ペア:

[(1, 81347120), (2, 40673560), (4, 20336780), (5, 16269424), (8, 10168390), (10, 8134712), (16, 5084195), (20, 4067356), (40, 2033678), (80, 1016839)]