20181992

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4787}}^1$

素因数の和:4841

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 21186328

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4787, 9574, 19148, 38296, 81379, 148397, 162758, 296794, 325516, 593588, 651032, 1187176, 2522749, 5045498, 10090996, 20181992]

約数ペア:

[(1, 20181992), (2, 10090996), (4, 5045498), (8, 2522749), (17, 1187176), (31, 651032), (34, 593588), (62, 325516), (68, 296794), (124, 162758), (136, 148397), (248, 81379), (527, 38296), (1054, 19148), (2108, 9574), (4216, 4787)]