19957983

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4397}}^1$

素因数の和:4506

約数の個数: 16

約数和(自身を含む): 28499040

約数和(自身を除く): 8541057

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4397, 4539, 13191, 74749, 224247, 391333, 1173999, 6652661, 19957983]

約数ペア:

[(1, 19957983), (3, 6652661), (17, 1173999), (51, 391333), (89, 224247), (267, 74749), (1513, 13191), (4397, 4539)]