31987137

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{9013}}^1$

素因数の和:9049

約数の個数: 24

約数和(自身を含む): 52785984

約数和(自身を除く): 20798847

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 9013, 27039, 63091, 117169, 189273, 351507, 820183, 1523197, 2460549, 4569591, 10662379, 31987137]

約数ペア:

[(1, 31987137), (3, 10662379), (7, 4569591), (13, 2460549), (21, 1523197), (39, 820183), (91, 351507), (169, 189273), (273, 117169), (507, 63091), (1183, 27039), (3549, 9013)]