81907120

素因数分解:

$2^4\times 5^1\times {\mathrm{1023839}}^1$

素因数の和:1023852

約数の個数: 20

約数和(自身を含む): 190434240

約数和(自身を除く): 108527120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1023839, 2047678, 4095356, 5119195, 8190712, 10238390, 16381424, 20476780, 40953560, 81907120]

約数ペア:

[(1, 81907120), (2, 40953560), (4, 20476780), (5, 16381424), (8, 10238390), (10, 8190712), (16, 5119195), (20, 4095356), (40, 2047678), (80, 1023839)]