21041264

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9461}}^1$

素因数の和:9608

約数の個数: 20

約数和(自身を含む): 41065080

約数和(自身を除く): 20023816

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9461, 18922, 37844, 75688, 151376, 1315079, 2630158, 5260316, 10520632, 21041264]

約数ペア:

[(1, 21041264), (2, 10520632), (4, 5260316), (8, 2630158), (16, 1315079), (139, 151376), (278, 75688), (556, 37844), (1112, 18922), (2224, 9461)]