19681971

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{3821}}^1$

素因数の和:3942

約数の個数: 16

約数和(自身を含む): 28068768

約数和(自身を除く): 8386797

約数列:

[1, 3, 17, 51, 101, 303, 1717, 3821, 5151, 11463, 64957, 194871, 385921, 1157763, 6560657, 19681971]

約数ペア:

[(1, 19681971), (3, 6560657), (17, 1157763), (51, 385921), (101, 194871), (303, 64957), (1717, 11463), (3821, 5151)]