205319920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197423}}^1$

素因数の和:197449

約数の個数: 40

約数和(自身を含む): 514092096

約数和(自身を除く): 308772176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 197423, 394846, 789692, 987115, 1579384, 1974230, 2566499, 3158768, 3948460, 5132998, 7896920, 10265996, 12832495, 15793840, 20531992, 25664990, 41063984, 51329980, 102659960, 205319920]

約数ペア:

[(1, 205319920), (2, 102659960), (4, 51329980), (5, 41063984), (8, 25664990), (10, 20531992), (13, 15793840), (16, 12832495), (20, 10265996), (26, 7896920), (40, 5132998), (52, 3948460), (65, 3158768), (80, 2566499), (104, 1974230), (130, 1579384), (208, 987115), (260, 789692), (520, 394846), (1040, 197423)]