81331900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{62563}}^1$

素因数の和:62590

約数の個数: 36

約数和(自身を含む): 190069432

約数和(自身を除く): 108737532

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 62563, 125126, 250252, 312815, 625630, 813319, 1251260, 1564075, 1626638, 3128150, 3253276, 4066595, 6256300, 8133190, 16266380, 20332975, 40665950, 81331900]

約数ペア:

[(1, 81331900), (2, 40665950), (4, 20332975), (5, 16266380), (10, 8133190), (13, 6256300), (20, 4066595), (25, 3253276), (26, 3128150), (50, 1626638), (52, 1564075), (65, 1251260), (100, 813319), (130, 625630), (260, 312815), (325, 250252), (650, 125126), (1300, 62563)]