21283952

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1321}}^1$

素因数の和:1401

約数の個数: 40

約数和(自身を含む): 44260560

約数和(自身を除く): 22976608

約数列:

[1, 2, 4, 8, 16, 19, 38, 53, 76, 106, 152, 212, 304, 424, 848, 1007, 1321, 2014, 2642, 4028, 5284, 8056, 10568, 16112, 21136, 25099, 50198, 70013, 100396, 140026, 200792, 280052, 401584, 560104, 1120208, 1330247, 2660494, 5320988, 10641976, 21283952]

約数ペア:

[(1, 21283952), (2, 10641976), (4, 5320988), (8, 2660494), (16, 1330247), (19, 1120208), (38, 560104), (53, 401584), (76, 280052), (106, 200792), (152, 140026), (212, 100396), (304, 70013), (424, 50198), (848, 25099), (1007, 21136), (1321, 16112), (2014, 10568), (2642, 8056), (4028, 5284)]