20702565

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 39591552

約数和(自身を除く): 18888987

約数列:

[1, 3, 5, 9, 13, 15, 39, 43, 45, 65, 117, 129, 195, 215, 387, 559, 585, 645, 823, 1677, 1935, 2469, 2795, 4115, 5031, 7407, 8385, 10699, 12345, 25155, 32097, 35389, 37035, 53495, 96291, 106167, 160485, 176945, 318501, 460057, 481455, 530835, 1380171, 1592505, 2300285, 4140513, 6900855, 20702565]

約数ペア:

[(1, 20702565), (3, 6900855), (5, 4140513), (9, 2300285), (13, 1592505), (15, 1380171), (39, 530835), (43, 481455), (45, 460057), (65, 318501), (117, 176945), (129, 160485), (195, 106167), (215, 96291), (387, 53495), (559, 37035), (585, 35389), (645, 32097), (823, 25155), (1677, 12345), (1935, 10699), (2469, 8385), (2795, 7407), (4115, 5031)]