31118120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{359}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 76982400

約数和(自身を除く): 45864280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 197, 220, 359, 394, 440, 718, 788, 985, 1436, 1576, 1795, 1970, 2167, 2872, 3590, 3940, 3949, 4334, 7180, 7880, 7898, 8668, 10835, 14360, 15796, 17336, 19745, 21670, 31592, 39490, 43340, 70723, 78980, 86680, 141446, 157960, 282892, 353615, 565784, 707230, 777953, 1414460, 1555906, 2828920, 3111812, 3889765, 6223624, 7779530, 15559060, 31118120]

約数ペア:

[(1, 31118120), (2, 15559060), (4, 7779530), (5, 6223624), (8, 3889765), (10, 3111812), (11, 2828920), (20, 1555906), (22, 1414460), (40, 777953), (44, 707230), (55, 565784), (88, 353615), (110, 282892), (197, 157960), (220, 141446), (359, 86680), (394, 78980), (440, 70723), (718, 43340), (788, 39490), (985, 31592), (1436, 21670), (1576, 19745), (1795, 17336), (1970, 15796), (2167, 14360), (2872, 10835), (3590, 8668), (3940, 7898), (3949, 7880), (4334, 7180)]