20490664

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{134807}}^1$

素因数の和:134832

約数の個数: 16

約数和(自身を含む): 40442400

約数和(自身を除く): 19951736

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 134807, 269614, 539228, 1078456, 2561333, 5122666, 10245332, 20490664]

約数ペア:

[(1, 20490664), (2, 10245332), (4, 5122666), (8, 2561333), (19, 1078456), (38, 539228), (76, 269614), (152, 134807)]