18278315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 25707456

約数和(自身を除く): 7429141

約数列:

[1, 5, 11, 17, 55, 85, 113, 173, 187, 565, 865, 935, 1243, 1903, 1921, 2941, 6215, 9515, 9605, 14705, 19549, 21131, 32351, 97745, 105655, 161755, 215039, 332333, 1075195, 1661665, 3655663, 18278315]

約数ペア:

[(1, 18278315), (5, 3655663), (11, 1661665), (17, 1075195), (55, 332333), (85, 215039), (113, 161755), (173, 105655), (187, 97745), (565, 32351), (865, 21131), (935, 19549), (1243, 14705), (1903, 9605), (1921, 9515), (2941, 6215)]