21387112

素因数分解:

$2^3\times {\mathrm{1097}}^1\times {\mathrm{2437}}^1$

素因数の和:3540

約数の個数: 16

約数和(自身を含む): 40153860

約数和(自身を除く): 18766748

約数列:

[1, 2, 4, 8, 1097, 2194, 2437, 4388, 4874, 8776, 9748, 19496, 2673389, 5346778, 10693556, 21387112]

約数ペア:

[(1, 21387112), (2, 10693556), (4, 5346778), (8, 2673389), (1097, 19496), (2194, 9748), (2437, 8776), (4388, 4874)]