42720111

素因数分解:

$3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1327}}^1$

素因数の和:1420

約数の個数: 36

約数和(自身を含む): 72819552

約数和(自身を除く): 30099441

約数列:

[1, 3, 7, 9, 21, 49, 63, 73, 147, 219, 441, 511, 657, 1327, 1533, 3577, 3981, 4599, 9289, 10731, 11943, 27867, 32193, 65023, 83601, 96871, 195069, 290613, 585207, 678097, 871839, 2034291, 4746679, 6102873, 14240037, 42720111]

約数ペア:

[(1, 42720111), (3, 14240037), (7, 6102873), (9, 4746679), (21, 2034291), (49, 871839), (63, 678097), (73, 585207), (147, 290613), (219, 195069), (441, 96871), (511, 83601), (657, 65023), (1327, 32193), (1533, 27867), (3577, 11943), (3981, 10731), (4599, 9289)]