19947590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{153443}}^1$

素因数の和:153463

約数の個数: 16

約数和(自身を含む): 38667888

約数和(自身を除く): 18720298

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 153443, 306886, 767215, 1534430, 1994759, 3989518, 9973795, 19947590]

約数ペア:

[(1, 19947590), (2, 9973795), (5, 3989518), (10, 1994759), (13, 1534430), (26, 767215), (65, 306886), (130, 153443)]