20013845

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{977}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 25561008

約数和(自身を除く): 5547163

約数列:

[1, 5, 17, 85, 241, 977, 1205, 4097, 4885, 16609, 20485, 83045, 235457, 1177285, 4002769, 20013845]

約数ペア:

[(1, 20013845), (5, 4002769), (17, 1177285), (85, 235457), (241, 83045), (977, 20485), (1205, 16609), (4097, 4885)]