19928405

素因数分解:

$5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{1297}}^1$

素因数の和:1748

約数の個数: 16

約数和(自身を含む): 27413760

約数和(自身を除く): 7485355

約数列:

[1, 5, 7, 35, 439, 1297, 2195, 3073, 6485, 9079, 15365, 45395, 569383, 2846915, 3985681, 19928405]

約数ペア:

[(1, 19928405), (5, 3985681), (7, 2846915), (35, 569383), (439, 45395), (1297, 15365), (2195, 9079), (3073, 6485)]