72986781

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{617}}^1$

素因数の和:801

約数の個数: 32

約数和(自身を含む): 114859008

約数和(自身を除く): 41872227

約数列:

[1, 3, 7, 21, 43, 129, 131, 301, 393, 617, 903, 917, 1851, 2751, 4319, 5633, 12957, 16899, 26531, 39431, 79593, 80827, 118293, 185717, 242481, 557151, 565789, 1697367, 3475561, 10426683, 24328927, 72986781]

約数ペア:

[(1, 72986781), (3, 24328927), (7, 10426683), (21, 3475561), (43, 1697367), (129, 565789), (131, 557151), (301, 242481), (393, 185717), (617, 118293), (903, 80827), (917, 79593), (1851, 39431), (2751, 26531), (4319, 16899), (5633, 12957)]