19901913

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{569}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 27086400

約数和(自身を除く): 7184487

約数列:

[1, 3, 89, 131, 267, 393, 569, 1707, 11659, 34977, 50641, 74539, 151923, 223617, 6633971, 19901913]

約数ペア:

[(1, 19901913), (3, 6633971), (89, 223617), (131, 151923), (267, 74539), (393, 50641), (569, 34977), (1707, 11659)]