81427040

素因数分解:

$2^5\times 5^1\times {\mathrm{508919}}^1$

素因数の和:508934

約数の個数: 24

約数和(自身を含む): 192371760

約数和(自身を除く): 110944720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 508919, 1017838, 2035676, 2544595, 4071352, 5089190, 8142704, 10178380, 16285408, 20356760, 40713520, 81427040]

約数ペア:

[(1, 81427040), (2, 40713520), (4, 20356760), (5, 16285408), (8, 10178380), (10, 8142704), (16, 5089190), (20, 4071352), (32, 2544595), (40, 2035676), (80, 1017838), (160, 508919)]