201991999

素因数分解:

${\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1\times {\mathrm{491}}^1$

素因数の和:902

約数の個数: 16

約数和(自身を含む): 223171200

約数和(自身を除く): 21179201

約数列:

[1, 11, 149, 251, 491, 1639, 2761, 5401, 37399, 73159, 123241, 411389, 804749, 1355651, 18362909, 201991999]

約数ペア:

[(1, 201991999), (11, 18362909), (149, 1355651), (251, 804749), (491, 411389), (1639, 123241), (2761, 73159), (5401, 37399)]