13905171

素因数分解:

$3^2\times 7^2\times {\mathrm{31531}}^1$

素因数の和:31551

約数の個数: 18

約数和(自身を含む): 23365212

約数和(自身を除く): 9460041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 31531, 94593, 220717, 283779, 662151, 1545019, 1986453, 4635057, 13905171]

約数ペア:

[(1, 13905171), (3, 4635057), (7, 1986453), (9, 1545019), (21, 662151), (49, 283779), (63, 220717), (147, 94593), (441, 31531)]