21556528

素因数分解:

$2^4\times 7^1\times {\mathrm{197}}^1\times {\mathrm{977}}^1$

素因数の和:1189

約数の個数: 40

約数和(自身を含む): 48023712

約数和(自身を除く): 26467184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 197, 394, 788, 977, 1379, 1576, 1954, 2758, 3152, 3908, 5516, 6839, 7816, 11032, 13678, 15632, 22064, 27356, 54712, 109424, 192469, 384938, 769876, 1347283, 1539752, 2694566, 3079504, 5389132, 10778264, 21556528]

約数ペア:

[(1, 21556528), (2, 10778264), (4, 5389132), (7, 3079504), (8, 2694566), (14, 1539752), (16, 1347283), (28, 769876), (56, 384938), (112, 192469), (197, 109424), (394, 54712), (788, 27356), (977, 22064), (1379, 15632), (1576, 13678), (1954, 11032), (2758, 7816), (3152, 6839), (3908, 5516)]