20364420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1777}}^1$

素因数の和:1980

約数の個数: 48

約数和(自身を含む): 57351168

約数和(自身を除く): 36986748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 191, 382, 573, 764, 955, 1146, 1777, 1910, 2292, 2865, 3554, 3820, 5331, 5730, 7108, 8885, 10662, 11460, 17770, 21324, 26655, 35540, 53310, 106620, 339407, 678814, 1018221, 1357628, 1697035, 2036442, 3394070, 4072884, 5091105, 6788140, 10182210, 20364420]

約数ペア:

[(1, 20364420), (2, 10182210), (3, 6788140), (4, 5091105), (5, 4072884), (6, 3394070), (10, 2036442), (12, 1697035), (15, 1357628), (20, 1018221), (30, 678814), (60, 339407), (191, 106620), (382, 53310), (573, 35540), (764, 26655), (955, 21324), (1146, 17770), (1777, 11460), (1910, 10662), (2292, 8885), (2865, 7108), (3554, 5730), (3820, 5331)]