81972580

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{29917}}^1$

素因数の和:30063

約数の個数: 24

約数和(自身を含む): 173404728

約数和(自身を除く): 91432148

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 29917, 59834, 119668, 149585, 299170, 598340, 4098629, 8197258, 16394516, 20493145, 40986290, 81972580]

約数ペア:

[(1, 81972580), (2, 40986290), (4, 20493145), (5, 16394516), (10, 8197258), (20, 4098629), (137, 598340), (274, 299170), (548, 149585), (685, 119668), (1370, 59834), (2740, 29917)]