18644013

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{7937}}^1$

素因数の和:7978

約数の個数: 20

約数和(自身を含む): 28814940

約数和(自身を除く): 10170927

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 7937, 23811, 71433, 214299, 230173, 642897, 690519, 2071557, 6214671, 18644013]

約数ペア:

[(1, 18644013), (3, 6214671), (9, 2071557), (27, 690519), (29, 642897), (81, 230173), (87, 214299), (261, 71433), (783, 23811), (2349, 7937)]