31719220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{121997}}^1$

素因数の和:122019

約数の個数: 24

約数和(自身を含む): 71734824

約数和(自身を除く): 40015604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 121997, 243994, 487988, 609985, 1219970, 1585961, 2439940, 3171922, 6343844, 7929805, 15859610, 31719220]

約数ペア:

[(1, 31719220), (2, 15859610), (4, 7929805), (5, 6343844), (10, 3171922), (13, 2439940), (20, 1585961), (26, 1219970), (52, 609985), (65, 487988), (130, 243994), (260, 121997)]