20980545

素因数分解:

$3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8581}}^1$

素因数の和:8752

約数の個数: 16

約数和(自身を含む): 33778752

約数和(自身を除く): 12798207

約数列:

[1, 3, 5, 15, 163, 489, 815, 2445, 8581, 25743, 42905, 128715, 1398703, 4196109, 6993515, 20980545]

約数ペア:

[(1, 20980545), (3, 6993515), (5, 4196109), (15, 1398703), (163, 128715), (489, 42905), (815, 25743), (2445, 8581)]