20580553

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{571}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 24893440

約数和(自身を除く): 4312887

約数列:

[1, 7, 19, 133, 271, 571, 1897, 3997, 5149, 10849, 36043, 75943, 154741, 1083187, 2940079, 20580553]

約数ペア:

[(1, 20580553), (7, 2940079), (19, 1083187), (133, 154741), (271, 75943), (571, 36043), (1897, 10849), (3997, 5149)]