21450016

素因数分解:

$2^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3089}}^1$

素因数の和:3137

約数の個数: 48

約数和(自身を含む): 49835520

約数和(自身を除く): 28385504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 112, 124, 217, 224, 248, 434, 496, 868, 992, 1736, 3089, 3472, 6178, 6944, 12356, 21623, 24712, 43246, 49424, 86492, 95759, 98848, 172984, 191518, 345968, 383036, 670313, 691936, 766072, 1340626, 1532144, 2681252, 3064288, 5362504, 10725008, 21450016]

約数ペア:

[(1, 21450016), (2, 10725008), (4, 5362504), (7, 3064288), (8, 2681252), (14, 1532144), (16, 1340626), (28, 766072), (31, 691936), (32, 670313), (56, 383036), (62, 345968), (112, 191518), (124, 172984), (217, 98848), (224, 95759), (248, 86492), (434, 49424), (496, 43246), (868, 24712), (992, 21623), (1736, 12356), (3089, 6944), (3472, 6178)]