21386672

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12263}}^1$

素因数の和:12380

約数の個数: 20

約数和(自身を含む): 41820240

約数和(自身を除く): 20433568

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12263, 24526, 49052, 98104, 196208, 1336667, 2673334, 5346668, 10693336, 21386672]

約数ペア:

[(1, 21386672), (2, 10693336), (4, 5346668), (8, 2673334), (16, 1336667), (109, 196208), (218, 98104), (436, 49052), (872, 24526), (1744, 12263)]