18729304

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{643}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 38485440

約数和(自身を除く): 19756136

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 331, 643, 662, 1286, 1324, 2572, 2648, 3641, 5144, 7073, 7282, 14146, 14564, 28292, 29128, 56584, 212833, 425666, 851332, 1702664, 2341163, 4682326, 9364652, 18729304]

約数ペア:

[(1, 18729304), (2, 9364652), (4, 4682326), (8, 2341163), (11, 1702664), (22, 851332), (44, 425666), (88, 212833), (331, 56584), (643, 29128), (662, 28292), (1286, 14564), (1324, 14146), (2572, 7282), (2648, 7073), (3641, 5144)]