18207145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 25608960

約数和(自身を除く): 7401815

約数列:

[1, 5, 11, 23, 37, 55, 115, 185, 253, 389, 407, 851, 1265, 1945, 2035, 4255, 4279, 8947, 9361, 14393, 21395, 44735, 46805, 71965, 98417, 158323, 331039, 492085, 791615, 1655195, 3641429, 18207145]

約数ペア:

[(1, 18207145), (5, 3641429), (11, 1655195), (23, 791615), (37, 492085), (55, 331039), (115, 158323), (185, 98417), (253, 71965), (389, 46805), (407, 44735), (851, 21395), (1265, 14393), (1945, 9361), (2035, 8947), (4255, 4279)]