21449104

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78857}}^1$

素因数の和:78882

約数の個数: 20

約数和(自身を含む): 44002764

約数和(自身を除く): 22553660

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78857, 157714, 315428, 630856, 1261712, 1340569, 2681138, 5362276, 10724552, 21449104]

約数ペア:

[(1, 21449104), (2, 10724552), (4, 5362276), (8, 2681138), (16, 1340569), (17, 1261712), (34, 630856), (68, 315428), (136, 157714), (272, 78857)]