19956657

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{55901}}^1$

素因数の和:55928

約数の個数: 16

約数和(自身を含む): 32199552

約数和(自身を除く): 12242895

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 55901, 167703, 391307, 950317, 1173921, 2850951, 6652219, 19956657]

約数ペア:

[(1, 19956657), (3, 6652219), (7, 2850951), (17, 1173921), (21, 950317), (51, 391307), (119, 167703), (357, 55901)]