90478520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{205633}}^1$

素因数の和:205655

約数の個数: 32

約数和(自身を含む): 222084720

約数和(自身を除く): 131606200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 205633, 411266, 822532, 1028165, 1645064, 2056330, 2261963, 4112660, 4523926, 8225320, 9047852, 11309815, 18095704, 22619630, 45239260, 90478520]

約数ペア:

[(1, 90478520), (2, 45239260), (4, 22619630), (5, 18095704), (8, 11309815), (10, 9047852), (11, 8225320), (20, 4523926), (22, 4112660), (40, 2261963), (44, 2056330), (55, 1645064), (88, 1028165), (110, 822532), (220, 411266), (440, 205633)]