81360015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{2503}}^1$

素因数の和:2719

約数の個数: 32

約数和(自身を含む): 142788096

約数和(自身を除く): 61428081

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 197, 591, 985, 2167, 2503, 2955, 6501, 7509, 10835, 12515, 27533, 32505, 37545, 82599, 137665, 412995, 493091, 1479273, 2465455, 5424001, 7396365, 16272003, 27120005, 81360015]

約数ペア:

[(1, 81360015), (3, 27120005), (5, 16272003), (11, 7396365), (15, 5424001), (33, 2465455), (55, 1479273), (165, 493091), (197, 412995), (591, 137665), (985, 82599), (2167, 37545), (2503, 32505), (2955, 27533), (6501, 12515), (7509, 10835)]