21988149

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 31455360

約数和(自身を除く): 9467211

約数列:

[1, 3, 19, 57, 79, 237, 257, 361, 771, 1083, 1501, 4503, 4883, 14649, 20303, 28519, 60909, 85557, 92777, 278331, 385757, 1157271, 7329383, 21988149]

約数ペア:

[(1, 21988149), (3, 7329383), (19, 1157271), (57, 385757), (79, 278331), (237, 92777), (257, 85557), (361, 60909), (771, 28519), (1083, 20303), (1501, 14649), (4503, 4883)]