20784460

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7933}}^1$

素因数の和:8073

約数の個数: 24

約数和(自身を含む): 43986096

約数和(自身を除く): 23201636

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7933, 15866, 31732, 39665, 79330, 158660, 1039223, 2078446, 4156892, 5196115, 10392230, 20784460]

約数ペア:

[(1, 20784460), (2, 10392230), (4, 5196115), (5, 4156892), (10, 2078446), (20, 1039223), (131, 158660), (262, 79330), (524, 39665), (655, 31732), (1310, 15866), (2620, 7933)]