28504917

素因数分解:

$3^2\times 7^2\times {\mathrm{109}}^1\times {\mathrm{593}}^1$

素因数の和:722

約数の個数: 36

約数和(自身を含む): 48416940

約数和(自身を除く): 19912023

約数列:

[1, 3, 7, 9, 21, 49, 63, 109, 147, 327, 441, 593, 763, 981, 1779, 2289, 4151, 5337, 5341, 6867, 12453, 16023, 29057, 37359, 48069, 64637, 87171, 193911, 261513, 452459, 581733, 1357377, 3167213, 4072131, 9501639, 28504917]

約数ペア:

[(1, 28504917), (3, 9501639), (7, 4072131), (9, 3167213), (21, 1357377), (49, 581733), (63, 452459), (109, 261513), (147, 193911), (327, 87171), (441, 64637), (593, 48069), (763, 37359), (981, 29057), (1779, 16023), (2289, 12453), (4151, 6867), (5337, 5341)]