64400265

素因数分解:

$3^4\times 5^1\times {\mathrm{159013}}^1$

素因数の和:159030

約数の個数: 20

約数和(自身を含む): 115444164

約数和(自身を除く): 51043899

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 159013, 477039, 795065, 1431117, 2385195, 4293351, 7155585, 12880053, 21466755, 64400265]

約数ペア:

[(1, 64400265), (3, 21466755), (5, 12880053), (9, 7155585), (15, 4293351), (27, 2385195), (45, 1431117), (81, 795065), (135, 477039), (405, 159013)]