28178381

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2273}}^1$

素因数の和:2321

約数の個数: 24

約数和(自身を含む): 37329984

約数和(自身を除く): 9151603

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1771, 2273, 12397, 15911, 25003, 52279, 111377, 175021, 365953, 575069, 1225147, 2561671, 4025483, 28178381]

約数ペア:

[(1, 28178381), (7, 4025483), (11, 2561671), (23, 1225147), (49, 575069), (77, 365953), (161, 175021), (253, 111377), (539, 52279), (1127, 25003), (1771, 15911), (2273, 12397)]