81411220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{33641}}^1$

素因数の和:33672

約数の個数: 36

約数和(自身を含む): 187924212

約数和(自身を除く): 106512992

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 33641, 67282, 134564, 168205, 336410, 370051, 672820, 740102, 1480204, 1850255, 3700510, 4070561, 7401020, 8141122, 16282244, 20352805, 40705610, 81411220]

約数ペア:

[(1, 81411220), (2, 40705610), (4, 20352805), (5, 16282244), (10, 8141122), (11, 7401020), (20, 4070561), (22, 3700510), (44, 1850255), (55, 1480204), (110, 740102), (121, 672820), (220, 370051), (242, 336410), (484, 168205), (605, 134564), (1210, 67282), (2420, 33641)]