21655364

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{3433}}^1$

素因数の和:3539

約数の個数: 24

約数和(自身を含む): 40383840

約数和(自身を除く): 18728476

約数列:

[1, 2, 4, 19, 38, 76, 83, 166, 332, 1577, 3154, 3433, 6308, 6866, 13732, 65227, 130454, 260908, 284939, 569878, 1139756, 5413841, 10827682, 21655364]

約数ペア:

[(1, 21655364), (2, 10827682), (4, 5413841), (19, 1139756), (38, 569878), (76, 284939), (83, 260908), (166, 130454), (332, 65227), (1577, 13732), (3154, 6866), (3433, 6308)]