20297075

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 26188800

約数和(自身を除く): 5891725

約数列:

[1, 5, 25, 43, 79, 215, 239, 395, 1075, 1195, 1975, 3397, 5975, 10277, 16985, 18881, 51385, 84925, 94405, 256925, 472025, 811883, 4059415, 20297075]

約数ペア:

[(1, 20297075), (5, 4059415), (25, 811883), (43, 472025), (79, 256925), (215, 94405), (239, 84925), (395, 51385), (1075, 18881), (1195, 16985), (1975, 10277), (3397, 5975)]