19720435

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19429}}^1$

素因数の和:19470

約数の個数: 16

約数和(自身を含む): 27979200

約数和(自身を除く): 8258765

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 19429, 97145, 136003, 563441, 680015, 2817205, 3944087, 19720435]

約数ペア:

[(1, 19720435), (5, 3944087), (7, 2817205), (29, 680015), (35, 563441), (145, 136003), (203, 97145), (1015, 19429)]