259220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1019

約数の個数: 24

約数和(自身を含む): 586824

約数和(自身を除く): 327604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 997, 1994, 3988, 4985, 9970, 12961, 19940, 25922, 51844, 64805, 129610, 259220]

約数ペア:

[(1, 259220), (2, 129610), (4, 64805), (5, 51844), (10, 25922), (13, 19940), (20, 12961), (26, 9970), (52, 4985), (65, 3988), (130, 1994), (260, 997)]