19918407

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{7369}}^1$

素因数の和:7442

約数の個数: 16

約数和(自身を含む): 28654560

約数和(自身を除く): 8736153

約数列:

[1, 3, 17, 51, 53, 159, 901, 2703, 7369, 22107, 125273, 375819, 390557, 1171671, 6639469, 19918407]

約数ペア:

[(1, 19918407), (3, 6639469), (17, 1171671), (51, 390557), (53, 375819), (159, 125273), (901, 22107), (2703, 7369)]