19840545

素因数分解:

$3^4\times 5^1\times {\mathrm{48989}}^1$

素因数の和:49006

約数の個数: 20

約数和(自身を含む): 35566740

約数和(自身を除く): 15726195

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 48989, 146967, 244945, 440901, 734835, 1322703, 2204505, 3968109, 6613515, 19840545]

約数ペア:

[(1, 19840545), (3, 6613515), (5, 3968109), (9, 2204505), (15, 1322703), (27, 734835), (45, 440901), (81, 244945), (135, 146967), (405, 48989)]