21300728

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156623}}^1$

素因数の和:156646

約数の個数: 16

約数和(自身を含む): 42288480

約数和(自身を除く): 20987752

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156623, 313246, 626492, 1252984, 2662591, 5325182, 10650364, 21300728]

約数ペア:

[(1, 21300728), (2, 10650364), (4, 5325182), (8, 2662591), (17, 1252984), (34, 626492), (68, 313246), (136, 156623)]