20998515

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73679}}^1$

素因数の和:73706

約数の個数: 16

約数和(自身を含む): 35366400

約数和(自身を除く): 14367885

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 73679, 221037, 368395, 1105185, 1399901, 4199703, 6999505, 20998515]

約数ペア:

[(1, 20998515), (3, 6999505), (5, 4199703), (15, 1399901), (19, 1105185), (57, 368395), (95, 221037), (285, 73679)]