19775405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{991}}^1$

素因数の和:1316

約数の個数: 16

約数和(自身を含む): 25665024

約数和(自身を除く): 5889619

約数列:

[1, 5, 13, 65, 307, 991, 1535, 3991, 4955, 12883, 19955, 64415, 304237, 1521185, 3955081, 19775405]

約数ペア:

[(1, 19775405), (5, 3955081), (13, 1521185), (65, 304237), (307, 64415), (991, 19955), (1535, 12883), (3991, 4955)]