21678736

素因数分解:

$2^4\times {\mathrm{1117}}^1\times {\mathrm{1213}}^1$

素因数の和:2338

約数の個数: 20

約数和(自身を含む): 42074812

約数和(自身を除く): 20396076

約数列:

[1, 2, 4, 8, 16, 1117, 1213, 2234, 2426, 4468, 4852, 8936, 9704, 17872, 19408, 1354921, 2709842, 5419684, 10839368, 21678736]

約数ペア:

[(1, 21678736), (2, 10839368), (4, 5419684), (8, 2709842), (16, 1354921), (1117, 19408), (1213, 17872), (2234, 9704), (2426, 8936), (4468, 4852)]