21992004

素因数分解:

$2^2\times 3^2\times {\mathrm{257}}^1\times {\mathrm{2377}}^1$

素因数の和:2644

約数の個数: 36

約数和(自身を含む): 55830684

約数和(自身を除く): 33838680

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 257, 514, 771, 1028, 1542, 2313, 2377, 3084, 4626, 4754, 7131, 9252, 9508, 14262, 21393, 28524, 42786, 85572, 610889, 1221778, 1832667, 2443556, 3665334, 5498001, 7330668, 10996002, 21992004]

約数ペア:

[(1, 21992004), (2, 10996002), (3, 7330668), (4, 5498001), (6, 3665334), (9, 2443556), (12, 1832667), (18, 1221778), (36, 610889), (257, 85572), (514, 42786), (771, 28524), (1028, 21393), (1542, 14262), (2313, 9508), (2377, 9252), (3084, 7131), (4626, 4754)]