21001994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{13691}}^1$

素因数の和:13765

約数の個数: 16

約数和(自身を含む): 34503840

約数和(自身を除く): 13501846

約数列:

[1, 2, 13, 26, 59, 118, 767, 1534, 13691, 27382, 177983, 355966, 807769, 1615538, 10500997, 21001994]

約数ペア:

[(1, 21001994), (2, 10500997), (13, 1615538), (26, 807769), (59, 355966), (118, 177983), (767, 27382), (1534, 13691)]