21000209037

素因数分解:

$3^1\times {\mathrm{719}}^1\times {\mathrm{1009}}^1\times {\mathrm{9649}}^1$

素因数の和:11380

約数の個数: 16

約数和(自身を含む): 28069920000

約数和(自身を除く): 7069710963

約数列:

[1, 3, 719, 1009, 2157, 3027, 9649, 28947, 725471, 2176413, 6937631, 9735841, 20812893, 29207523, 7000069679, 21000209037]

約数ペア:

[(1, 21000209037), (3, 7000069679), (719, 29207523), (1009, 20812893), (2157, 9735841), (3027, 6937631), (9649, 2176413), (28947, 725471)]