19946773

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1609}}^1$

素因数の和:1657

約数の個数: 24

約数和(自身を含む): 26429760

約数和(自身を除く): 6482987

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1609, 1771, 11263, 12397, 17699, 37007, 78841, 123893, 259049, 407077, 867251, 1813343, 2849539, 19946773]

約数ペア:

[(1, 19946773), (7, 2849539), (11, 1813343), (23, 867251), (49, 407077), (77, 259049), (161, 123893), (253, 78841), (539, 37007), (1127, 17699), (1609, 12397), (1771, 11263)]