164025405

素因数分解:

$3^4\times 5^1\times {\mathrm{405001}}^1$

素因数の和:405018

約数の個数: 20

約数和(自身を含む): 294031452

約数和(自身を除く): 130006047

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 405001, 1215003, 2025005, 3645009, 6075015, 10935027, 18225045, 32805081, 54675135, 164025405]

約数ペア:

[(1, 164025405), (3, 54675135), (5, 32805081), (9, 18225045), (15, 10935027), (27, 6075015), (45, 3645009), (81, 2025005), (135, 1215003), (405, 405001)]