18990011

素因数分解:

${\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:362

約数の個数: 16

約数和(自身を含む): 20471808

約数和(自身を除く): 1481797

約数列:

[1, 31, 41, 67, 223, 1271, 2077, 2747, 6913, 9143, 14941, 85157, 283433, 463171, 612581, 18990011]

約数ペア:

[(1, 18990011), (31, 612581), (41, 463171), (67, 283433), (223, 85157), (1271, 14941), (2077, 9143), (2747, 6913)]